question archive The grade point averages for 10 randomly selected high schools students are listed below
The grade point averages for 10 randomly selected high schools students are listed below
Subject:StatisticsPrice: Bought3
The grade point averages for 10 randomly selected high schools students are listed below. Assume the grade point averages are normally distributed.GPA 2.0 3.2 1.8 2.9 0.9 4.0 3.3 2.9 3.6 0.8Find a 98% confidence interval for the true mean.a) What is the average GPA? (Round the answer to two decimal places. Hint: you may want to enter the data to TI graphing calculator for answers of mean and standard deviation.)b) What is the standard deviation for the distribution of GPA?c) What is the margin of error for the estimate?d) What is the lower limit of the confidence interval?e) What is the upper limit of the confidence interval?
