1.

The weight of 1000 children average 50 kg and the standard deviation is 5 kg. what is the z-score corresponds to 55?Solution:​

Answer»

Step-by-step EXPLANATION:

ASSUME a normal distribution.

Convert the upper and lower weight limits to ‘Z’ scores using the given average (or mean) and STANDARD deviation.

Now use those scores in a table or online calculator (SAY Normal distribution calculator ) to find the fraction of the children between the the scores.

Finally obtain the fraction of 1,000 using that fraction.


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