Question

On which of the following exams did Rebecca do better? How about Maurice? Explain Exam Mean...

On which of the following exams did Rebecca do better? How about Maurice? Explain

Exam

Mean

SD

Rebecca’s Score

Maurice’s Score

History

120

6.8

130

132

Law

50

2.4

56

52
Math   Statistics-And-Probability   
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Homework Answers

Answer #1

History exam z score for Rebecca with x score = 130 and mean = 120 and sd = 6.8

z = (x-mean)/sd

z = (130-120)/6.8

z = 1.47

Law exam z score for Rebecca with x score = 56 and mean = 50 and sd = 2.4

z = (x-mean)/sd

z = (56-50)/2.4

z = 2.5

And

History exam z score for Maurice with x score = 132 and mean = 120 and sd = 6.8

z = (x-mean)/sd

z = (132-120)/6.8

z = 1.76

Law exam z score for Maurice with x score = 52 and mean = 50 and sd = 2.4

z = (x-mean)/sd

z = (52-50)/2.4

z = 0.83

Hence, Rebecca did better on Law exam(higher z score) and Maurice did better on History exam(higher z score)

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