Asimple random sample has a sample size of n=65. given the population is normally distributed, find the critical value t_a/2 corresponding to a 99% confidence level.

2.6549

Step-by-step explanation:

Since the sample size n=65, the degrees of freedom is n-1=65-1=64

The critical value=

Using the t-table and selecting df=64 and since it’s a 2 tail the corresponding t-score is 2.6549

Therefore, the critical value is 2.6549

typically if you want , you would actually put questions here for us to you. but hey, that's just me. maybe someone will magically answer the questions for you without knowing what they are.

step-by-step explanation:

first, eliminate the parenthesis:

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second, group like terms:

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third, combine like terms:

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