Estimate z-score and raw score using normal distribution

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Suppose that an experimenter administer a word recall task to groups of freshman, sophomores, juniors, and seniors. Fill in the table below. Compute the score based on their appropriate class means and standard deviations: 

Group

Mean

Standard Deviation

Freshman

24.95

1.68

Sophomores

22.62

1.43

Juniors

23.47

1.98

Seniors

25.64

1.23

 

 

Raw Score

Z -score

Jim (freshman)

22

 

Tommy (sophomores)

 

-1.3

Peter (Junior)

 

1.45

Colleen (senior)

24


Reference no: EM1317227

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