Ap statistics Murder Mystery



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Murder Mystery

The Usual Suspects
Both the police and the instructor think that the true murderer is extremely smart. Examine the information below concerning test scores. You can safely eliminate the suspect with a percentile score below 98%. You will need to sketch and label a distribution graph for each calculation below.
The “fun-loving” senior earned 770 on the math portion of the SAT. SAT scores are normally distributed with a mean score of 500 and a standard deviation of 120.

A. Calculate the percentile score for the “fun-loving” senior.

The junior with the long big toe scored 130 on an IQ test that had a mean score of 100 and a standard deviation of 15. Scores on the IQ test are normally distributed.

B. Calculate the percentile score for the junior with the long big toe.


The Head Counselor scored a 557 on the Counseling Academic Proficiency Test (CAPT). The scores on this test are normally distributed with a mean of 500 and a standard deviation of 25.

C. Calculate the percentile score for the Head Counselor.

D. Can you eliminate a suspect? Which one?

E. Which suspects remain?

F. Which murder weapons still remain?

G. Which locations still remain?




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