This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.
| 2. |
In testing a hypothesis about two population means, it the t distribution is used, which of the following assumptions is required?The sample sizes are equalBoth populations are normally distributedThe standard deviations are not the sameBoth population means are the same |
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Answer» Step-by-step EXPLANATION: We use this hypothesis test when the data meets the FOLLOWING conditions. The two random samples are independent. The variable is NORMALLY distributed in both populations. If this variable is not KNOWN, samples of more than 30 will have a difference in sample means that can be modeled ADEQUATELY by the t-distribution. |
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| 3. |
How many millions make 3 crores |
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Answer» Answer: 30 MILLION are there in 3 CRORES Step-by-step explanation: |
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| 4. |
7. Study the pattern 91 x 11 x 1 = 1001, 91 x 11 x 2 = 2002,91 x 11 x 3 = 3003 . Write next seven steps . Check, whether the result is correct.8. How would we multiply the numbers 13680347, 35702369 and 25692353 with 9 mentally ? what is the pattern that emerges. |
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Answer» Step-by-step EXPLANATION: |
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| 5. |
The Normal curve is _________ about Z=0uniformAsymmetricnoneSymmetric |
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Answer» Uniform hope it helps please MARK it as BRAINLIEST answer. |
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| 6. |
Vatsal added 2305 to a number and then added 1653 again. He got the answer as 10000. Find the number he started with |
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Answer» Answer: 6042 Step-by-step EXPLANATION: LET the no be X, so,x+2305+1653=10000 x+3958=10000, THEREFORE, x=10000-3958=6042 mark BRAINLIST |
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| 7. |
Find the prime factor of 125 175 and 650 |
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Answer» ANSWER IS IN ATTACHMENT PLZ LIKE THE ANSWER AND MARK IT AS BRAINLIEST. ANSWER BY MANAS817 |
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| 8. |
A statement made about a population for testing purpose is called?StatisticLevel of SignificanceTest of StatisticHypothesis |
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Answer» HYPOTHESIS is the answer |
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| 9. |
2х2х3х3х7ЗX 3X 3x 3X 7 |
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Answer» here is your answer:252and567 |
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| 10. |
-9) दो अंकों की एक संख्या अपने अंकों के गुणनफल के दुगुने से 8 कम है। यदि इकाई के अंकसे दहाई का अंक 1 अधिक हो, तो वह कौन-सी संख्या है? |
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Answer» Answer: 89 Step-by-step EXPLANATION: -----------------------+- |
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| 11. |
If ∆ABC ~ ∆DEF and AB = 5cm, ar(∆ABC) = 20cm2 , ar(∆DEF) = 45cm2 then DE = (a) 4 5 (b) 7.5cm (c) 8.5cm (d) 7.2cm |
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Answer» Step-by-step EXPLANATION: |
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| 12. |
Pls solve it fast................. |
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Answer» Answer: 1) Double BAR Graph 2) Raw Data 3) Frequency 4) Histograms 5) pie chart HOPE IT HELPS YOU PLEASE MARK ME AS THE BRAINLIEST |
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| 13. |
Analysis of variance is a statistical method of comparing the _____ of several populationsmeansproportionsvariancesstandard deviations |
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Answer» Answer: ANALYSIS of Variance (ANOVA) is a statistical method used to test differences between two or more means. It may SEEM odd that the technique is called "Analysis of Variance" RATHER than "Analysis of Means." As you will see, the name is appropriate because inferences about means are MADE by ANALYZING variance. |
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| 14. |
Find the smallest number which when divided by 11 is exactly divisible by 15 20 and 54 |
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Answer» Step-by-step EXPLANATION: |
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| 15. |
Type 1 error occurs whenReject H0 if it is TrueAccept H0 if it is FalseAccept H0 if it is True Reject H0 if it is Fals |
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Answer» Answer: ACCEPT HO if it is Falseplz mark me as brainliest and follow...... |
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| 16. |
Please solve the question in attachment.... |
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| 17. |
Chi-square distribution_____ ContinuousMultimodalSymmetrical Uniform |
Answer» UNIFORMI HOPE it HELPS you....... |
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| 18. |
The coach of cricket team buys 7 bats and 6 balls for rupees 3,800.later she buys 3 bats and 5 balls for rupees 1750 . find the cost of each ball and each ball. |
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Answer» Step-by-step explanation: Let cost of each bat = Rs x Cost of each ball = Rs y Given that coach of a CRICKET team buys 7 BATS and 6 balls for Rs 3800. So that 7x + 6y = 3800 6y = 3800 – 7x Divide by 6 we get y = (3800 – 7x) /6 … (1) Given that she buys 3 bats and 5 balls for Rs 1750.so that 3x + 5y = 1750 Plug the value of y 3x + 5 ((3800 – 7x) /6) = 1750 Multiply by 6 we get 18 x + 19000 – 35 x = 10500 -17X =10500 - 19000 -17x = -8500 x = - 8500 / - 17 x = 500 Plug this value in equation first we get y = ( 3800 – 7 * 500) / 6 y = 300/6 y = 50 Hence cost of each bat = Rs 500 and cost of each balls is Rs 50 |
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| 19. |
Necessary Conditions required to apply the z-test to test the difference between two population means isall the above Standard deviation of the population should be knowneach population has normal distributionThe samples must be randomly selected |
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Answer» HEY MATE HERE UR ANSWER.... What is z-test and t-test ? A Z-test is any statistical test for which the distribution of the test statistic under the null hypothesis can be approximated by a normal distribution. Z-test tests the mean of a distribution in which we already know the POPULATION variance σ2 . Because of the central LIMIT theorem, many test statistics are approximately normally DISTRIBUTED for large samples. For each significance level in the confidence interval, the Z-test has a single critical value (for example, 1.96 for 5% two tailed) which makes it more convenient than the Student's t-test which has separate and different critical values for each sample size (for different sample size, it would have different degree of freedom, which may determine the value of the critical values). Therefore, many statistical tests can be conveniently performed as approximate Z-tests if the sample size is large or the population variance is KNOWN. If the population variance is unknown (and therefore has to be estimated from the sample itself) and the sample size is not large (n < 30), the Student's t-test may be more appropriate. ________________________________ What conditions are necessary in order to use the z-test to test the difference between two population means? The samples must be randomly SELECTED, each population has a normal distribution with a known standard deviation, the samples must be independent. All population means are equal. Hope it helps u... Please follow me, I will be thankful to u... Please mark as brainliest... |
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| 20. |
Weight ( in kilogram) of eight students is as follows- 30,32,33,38,37,41,45,40 find the average weight of the students |
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Answer» ANSWER: 30+32+33+38+37+41+45+40=296
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| 21. |
Show that every positive odd integer is of form 2q + 1 |
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Answer» Answer: let 'a' be any positive INTEGER and b=2 By euclid's division algorithm a=bq+r 0≤r a=2q+r 0≤r<2 (i.e) r =0,1 r=0 , a=2q+0=> a=2q r=1, a=2q+1 if a is the FORM of 2m then 'a' is an even integer and positive odd integer is of the form 2m+1 |
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| 22. |
The hight of the first step is 10 cm and the hight of the each step is 17.5 cmhow high from the ground would be some one climbing up after each step? |
Answer» Over the years, carpenters have determined that tread width times riser HEIGHT should EQUAL somewhere between 72 to 75 inches. On a main stair, the maximum RISE should be no more than 8 1/4 inches and the minimum run should be no less than 9 inches. |
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| 23. |
The test which measures how well the observed distribution of data fits with the distribution that is expected if the variables are independent isF-testt-testpaired t-test\chi ^{2}-test |
Answer»
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| 24. |
Factorize : a^12.y^4-a^4.y^12 |
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Answer» this is the PROPER solution mark me as brainliest |
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| 25. |
Y3-7 y+ 6Factoriese |
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Answer» Step-by-step EXPLANATION: y3-7 y+ 6y-4 y+6y+y=6+42y=10y=10/2y=5HOPE IT HELPS YOU |
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| 26. |
The figure shows the position-timex t graph of one dimensional motionof a body of mass 0.4 kg. Themagnitude of each impulse is1) 0.4 Ns 2) 0.8 Ns3) 1.6 Ns 4) 0.2 Ns |
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Answer» Step-by-step EXPLANATION: In each IMPULSE, x varies from 0 to 2m and again from 2 m to 0 during the time interval of 4s. We have, Impulse = Change in momentum m(V2 - v1 ) = 0.4 x 2 = 0.8 Ns |
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| 27. |
Find the zeroes of t sq plus 25 |
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Answer» Answer: you will g |
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| 28. |
Find quadratic polynomial with sum of zeroes equal to 1/4 and product equal to 1/3 |
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Answer» x^2-1/4x+1/3 Step-by-step EXPLANATION: |
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| 29. |
Whycoccondgets hardmed Grive reasons |
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Answer» Step-by-step EXPLANATION: I THINK this must be wrong question it should be coconut not 'coccond' please FOLLOW me |
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| 30. |
Study the following arrangement carefully and answer the question1 pointgiven below.B @ 2 $ G 6ACO %7 F# B KL 2 YTP 6 W35 UFV 9Three of the following four are alike in a certain way based on theirpositions in the above arrangement and so form a group. Which is the onethat does not belong to that group? |
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| 31. |
Is -1 the zero of polynomial 2x^4 +9x^3+11x^2+4x-6show the calculation plz ...ill mark as brainliest |
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Answer» Answer: -6 Step-by-step explanation: p(-1)=2(-1)^4+9(-1)^3+11(-1)^2+4(-1)-6 = 2-9+11-4-6 = -6 HOPE IT HELPS YOU PLEASE FOLLOW ME UP MARK THIS AS BRAINLIEST |
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| 32. |
Show that 2−3√5 is an irrational number |
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Answer» Step-by-step explanation: be a RATIONAL number. 3 √5 =2−x √5 = 3 2−x
SINCE x is rational, 2-x is rational and hence 3 2−x is also rational number ⇒ √5
is a rational numbers, which is a contradiction. Hence 2−3√5
must be an irrational number. pls mark me as BRAINLIEST |
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| 33. |
Find the value of k when the root of the quadratic equationx²+ k(4x+k-1)+ 2= 0 are real and equal. |
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Answer» Step-by-step EXPLANATION: x2+k(4x+k-1)+2=0 now k-1=0 k=1 |
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| 34. |
Find the smallest number is |
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Answer» Answer: 1 : The SMALLEST natural number(i.e. positive INTEGER) is 1. 2 : The smallest whole number is 0. 3 : There is no smallest integer. |
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| 35. |
The probability of committing type-II error is denoted by1-\beta1-\alpha\beta\alpha |
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| 36. |
Factorise3x^2+11x+6 |
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Answer» Step-by-step explanation: 3X^2 + 11x + 6 3x^2 + 9x + 2X + 6 3x(X + 3) + 2(x +3) (3x + 2)(x + 3) |
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| 37. |
solve the following equation and verify your answer. 0.5x-4/2.4x+6=-5/3 |
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Answer» Answer: quadratic equation Step-by-step EXPLANATION: |
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| 38. |
The ( m - 3) ( m-7)= ? |
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Answer» m^2-3m+21 Step-by-step EXPLANATION: m-3*m then m-3*7 |
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| 39. |
Obtain all zeros of the polynomial f(x)=2x⁴+x³-14x²-19x-6. if two of its zero are -2and -1 |
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| 40. |
If a cone of radius 7cm and height 36m is cut from a cylinder of same dimensions then the volume of the remaining solid isplease please answer if u know only . dont copy from internet ( NO SPAM ❌) |
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Answer» i have a DOUBT on the radius you have stated as it is in CM so i have in metres and cm hope it helps you.mark it as a BRAINLIST |
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| 41. |
XG-QuizG-Leam/Quiz/QuizStartPage2Q.No: 2, Marks : 11. Magnitude of maximum directional derivative of a scalar point function F(x,y,the given direction is0 10 FIO FOFIIVFI |
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Answer» PLEASE MARK me the BRAINLIEST answer |
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| 42. |
The point where the Null Hypothesis gets rejected is called asAcceptance ValueSignificant ValueCritical ValueRejection Value |
Answer» CRITICAL ValueUr answer is here.....!!!!!PLZ MARK as BRAINLIEST....!!!! |
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| 43. |
The marked price of a table is 1200, which is 20%above the cost price. It is sold at a discount of 10%on the marked price. Find the profit per cent. |
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Answer» Step-by-step EXPLANATION: Price after DISCOUNT is 1080 Profit %=960/1080×100 =88.8% |
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| 44. |
X2 chi-square test statistic is\sum \frac{(O_{i}+E_{i})^{2}}{E_{i}}\sum \frac{(O_{i}-E_{i})}{E_{i}}\sum \frac{(O_{i}-E_{i})^{2}}{E_{i}^{2}}\sum \frac{(O_{i}-E_{i})^{2}}{E_{i}} |
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Answer» SORRY I do no this answer |
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| 45. |
State different kind of number system class 10 ch1 real numbers |
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Answer» Step-by-step explanation: The set of real NUMBERS CONSIST of different categories, such as natural and whole numbers, rational and irrational numbers and integers. In the table given here, all these numbers are DEFINED with examples. CONTAIN all counting numbers which start from 1.I hope my ans will help you PLEASE follow me and mark me Brainliest |
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| 46. |
3.SUNITHA TAKES A LOAN OF 5000 RUPEES AT 12% RATE OF INTEREST.FIND THE INTEREST SHE HAS T5O PAY AT THE END OF ONE Year |
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Answer» Answer: 600 Step-by-step EXPLANATION: |
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| 47. |
A toy is in the shape of cone mounted on a hemisphere. The diameter of the base and the height of the cone are 8cm and 3cm respictevely. Determine the surface area of the toy. use(π=3.14 |
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Answer» ANSWER:Total surface ARES of the toy= Surface area of the cone (πrl)+ surface area of hemisphere (2πr ^2) =π.3×5+2.π.3 ^2 =33π=33×3.14=103.62 .....Stay safe |
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| 48. |
G-LeamxG-QuizX +CНz/QuizStartPage2aps x Book 1.xlsx - Micros...Q.No: 1, Marks : 1The divergence theorem for a surface consisting of a sphere is computed in which coordinate system?O CylindricalO CartesianO SphericalO Depends on the function |
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| 49. |
The value of \alpha is known asNone of the aboveThe level of significance The rejection levelThe accepted level |
Answer» HELLO MATE ,,,,,,,,THE VALUE OF \ALPHA IS KNOWN AS THE LEVEL OF SIGNIFICANCE..THANKYOU✷✷✯✯✷✷✯✯✷✷✯✯♥HOPE YOU ARE SATISFIED WITH THE ANSWER.♥ |
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| 50. |
The t test is applicable to samples for which nisn30 |
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Answer» Answer: I think NONE Step-by-step EXPLANATION: FOLLOW me please |
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