9. Pic below…multiple parts
12. Pic below…multiple parts
13. Pic below… 1 additional part
15. Pic below…1 additional part
16. Assume that you want to construct a 95% confidence interval estimate of a population mean. Find an estimate of the sample size needed to obtain the specified margin of error for the 95% confidence interval. The sample standard deviation is given below.
Margin of error = $ 6 , standard deviation = $ 25
The required sample size is .
(Round up to the nearest whole number as needed.)