Test scores for a history class had a mean of 79 with a standard ...

[Medesa]

Test scores for a history class had a mean of 79 with a standard deviation of 4.5. Test scores for a physics class had a mean of 69 with a standard deviation of 3.7. One student earned a 87 on the history test and a 82 on the physics test. Calculate the z-score for each test. On which test did the student perform better?
 
  What will be an ideal response?

Question 2

A recent study suggested that 70 of all eligible voters will vote in the next presidential election. Suppose 20 eligible voters were randomly selected from the population of all eligible voters. Use a binomial probability table to find the probability that more than 10 but fewer than 16 of the 20 eligible voters sampled will vote in the next presidential election.
 
  A) 0.714 B) 0.649 C) 0.780 D) 0.845

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Answer to Question 1

history z-score = 1.78; physics z-score = 3.51; The student performed better on the physics test.

Answer to Question 2

A

[Medesa]

Excellent

[parker125]

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