In testing a hypothesis about two population means, it the t distribut

1.	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
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.

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

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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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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