1. Kate and John recently took a standardized test. The summary statistics are reported below. Mean:...

1. Kate and John recently took a standardized test. The summary statistics are reported below.

Mean: 80

Standard deviation: 4

Kate’s score: 90

John’s score: 72

Assuming that the distribution is approximately normal, if 2,000 people took the test,

approximately how many people scored between Kate and John? (10 points)

approximately how many people scored better than Kate? (10 points)

approximately how many people scored lower than John? (10 points)

approximately how many people scored better than John? (10 points)

Solutions

Expert Solution

(a)

(b)

(c)

(d)

orchestra answered 1 year ago

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