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Descriptive analysis revealed that the mean Test 3 score of all 63 students in Dr. Bills’s...

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Statistics

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.

Answer & Explanation Solved by verified expert
3.7 Ratings (524 Votes)
Mean 80standard deviation 16Sample size n 635 Determine    See Answer
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