Descriptive analysis revealed that the mean Test 3 score of all63 students in Dr. Bills’s statistics courses was an 80. Similarly,the standard deviation for all students’ Test 3 scores was found tobe 16. Assume the Test 3 scores are approximately normallydistributed.
5. Determine the Test 3 score that corresponds to az-score of -2.18. Round your solution to the nearest wholenumber.
6. Find the 75th percentile. That is, find the testscore such that 75% of all test scores are below it. Hint: Seeexample on the Chapter 6 handout. Round your solution to thenearest whole number.
