Question
Having trouble with these. For each will it become wider, become narrow , stay the same or theres not enough info . Please let me
Having trouble with these. For each will it become wider, become narrow , stay the same or theres not enough info . Please let me know how to do these step by step so i know for the future. thank you
- A 95% confidence interval was calculated using a sample size of 30, a standard deviation of 5, and a mean value of 20. If the sample size increases to 50, what will happen to the width of confidence interval?
- A 95% confidence interval was calculated using a sample size of 30, a standard deviation of 5, and a mean value of 20. If the standard deviation increases to 8, what will happen to the width of confidence interval?
- A 99% confidence interval was calculated using a sample size of 30, a standard deviation of 5, and a mean value of 20. If the mean value increases to 24, what will happen to the width of confidence interval?
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Precalculus
Authors: Michael Sullivan
10th Global Edition
1292121772, 1292121777, 978-1292121772
