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In: Statistics and Probability

How do you construct a confidence interval for a t test and a z test?

How do you construct a confidence interval for a t test and a z test?

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Expert Solution

Answer:-

For a t test:-

Actually there are 4 steps involved to construct a confidence interval

Step 1:-Calculate the sample mean which is denoted as

Step 2:-Calculate the critical value of t at a given confidence interval

Step 3:-Calculate the standard deviation denoted as ()

Step 4:-Identify the sample size (n)

Formula to find Confidence interval for a t test is

For a z test:-

Step 1:-Calculate the sample mean which is denoted as

Step 2:-Calculate the critical value of z at a given confidence interval

Step 3:-Calculate the standard deviation denoted as ()

Step 4:-Identify the sample size (n)

Formula to find Confidence interval for a z test is

orchestra answered 2 years ago
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