Question

Question 13 of 25 (3 points) Attempt 1 of 1 l 47m 55s Remaining Section Exercise 26 Undergraduate GPAs It is desired to estimate the mean GPA of each undergraduate class at a large university. How large a sample is necessary to estimate the GPA within 0.21 at the 95% confidence level? The population standard deviation is 1.36. If needed, round your final answer up to the next whole number. The university needs at least a sample of students. Submit Assignment 2020 McGraw-Hill Education All Rights Reservedlems of the Histogram (1).xls -0.exe 2 HYPOTHESIS SUM...doc chapters 3 (1) A B hypo testing and Ohp a Cox New PE 2004 (hp)

Answer 1

E = 0.21

For 95% z = 1.96

Population SD = 1.36

1.96 * 1.36 n= (*°)2 = (-0.21) -)2 = 161.12 – 162

Hence, 162 is the required sample size.

Please comment if any doubt. Thank you.