MATH221 Statistics for Decision Making Week 6 Lab quiz (Latest 2022/2023)

Short Answer Writing Assignment All answers should be complete sentences. We need to find the confidence interval for the SLEEP variable. To do this, we need to find the mean and standard deviation with the Week 1 spreadsheet. Then we can the Week 5 spreadsheet to find the confidence interval. First, find the mean and standard deviation by copying the SLEEP variable and pasting it into the Week 1 spreadsheet. Write down the mean and the sample standard deviation as well as the count. Open the Week 5 spreadsheet and type in the values needed in the green cells at the top. The confidence interval is shown in the yellow cells as the lower limit and the upper limit. 1. Give and interpret the 95% confidence interval for the hours of sleep a student gets. With 95% confidence, I can say the mean number of student sleep hours is between 6.16, and 7.04. Change the confidence level to 99% to find the 99% confidence interval for the SLEEP variable. 2. Give and interpret the 99% confidence interval for the hours of sleep a student gets. With 95% confidence, I can say the mean number of student sleep hours is between 6.02 and 7.2 3. Compare the 95% and 99% confidence intervals for the hours of sleep a student gets. Explain the diffe