9. The following table lists the quiz scores for a class of ten students mal pla
ID: 3321969 • Letter: 9
Question
9. The following table lists the quiz scores for a class of ten students mal places). First, find the mean and verify hit the sandard deviation of the quiz scores is 5,92. Finally, decide if each quiz score is unusual. a. Find the mean quiz score and the -score for cach quiz score (rounded to two deci- u ScoreScore Unusual? 15 20 19 23 25 19 24 25 What is the largest z-score? What is the smallest z-score? Is either of these scores unusual? b. c. How high or low does a quiz score have to be to be considered unusual for this quiz? d. Write this range as an inequality 10. Looking Forward, Looking Back Simplify. 10%Explanation / Answer
a)
b)
largest z-score = 1.030405
lowest = -2.3479
c) z =3
18.9 + 3 * 5.92 = 36.66
18.9 - 3*5.92 = 1.14
d)x > 36.66 or x < 1.14
15 -0.65878 20 0.185811 19 0.016892 23 0.692568 25 1.030405 14 -0.8277 19 0.016892 5 -2.34797 24 0.861486 25 1.030405Related Questions
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