Here are summary statistics for randomly selected weights of newborn girls: n = 158, x̅=30.2 hg, s = 7.8 hg. The confidence level is 99%

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Question

Here are summary statistics for randomly selected weights of newborn girls: n = 158, x̅=30.2 hg, s = 7.8 hg. The confidence level is 99%

Assume that we want to construct a confidence interval. Do one of the following, as appropriate: (a) find the critical value tα/2, (b) find the critical value zα/2 or (c) state that neither the normal distribution nor the t distribution applies.

Select the correct choice below and, if necessary, fill in the answer box to complete your choice.

math Statistics-And-Probability

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Answer 1

Answer #1

here as we do not know population std deviaiton we will use t distribution

option A is correct : talpha/2 =2.61

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Answer 2

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Here are summary statistics for randomly selected weights of newborn girls: n = 158, x̅=30.2 hg, s = 7.8 hg. The confidence level is 99%

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Here are summary statistics for randomly selected weights of newborn girls: n = 158, x̅=30.2 hg, s = 7.8 hg. The confidence level is 99%

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Assume that we want to construct a confidence interval. Do one of the following, as appropriate:...

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Homework Answers

Add Answer to: Here are summary statistics for randomly selected weights of newborn girls: n = 158, x̅=30.2 hg, s = 7.8 hg. The confidence level is 99%

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Here are summary statistics for randomly selected weights of newborn girls: n = 158, x̅=30.2 hg, s = 7.8 hg. The confidence level is 99%