Question

A math teacher claims that she has developed a review course that increases the scores of students on the math portion of a college entrance exam. Based on data from the administrator of the exam, scores are normally distributed with

mu equalsμ=517517.

The teacher obtains a random sample of

18001800

students, puts them through the review class, and finds that the mean math score of the

18001800

students is

523523

with a standard deviation of

116116.

Complete parts(a) through (d) below.

(a) State the null and alternative hypotheses. Let

muμ

be the mean score. Choose the correct answer below.

Answer #1

A math teacher claims that she has developed a review course
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through the review class, and finds that the mean math score of
the 1800 students is 532 with a standard deviation of 116. Find the
test...

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