Test: AP Statistics

Alex took a test in physics and scored a 35. The class average was 27 and the standard deviation was 5.

Noah took a chemistry test and scored an 82. The class average was 70 and the standard deviation was 8.

1.

Show that Alex had the better performance by calculating - 

1) Alex's standard normal percentile and

2) Noah's standard normal percentile

Alex = .855

Noah = .844

Alex = .901

Noah = .926

Alex = .923

Noah = .911

Alex = .945

Noah = .933

Alex = .778

Noah = .723

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