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A math teacher claims that she has developed a review course that increases the scores of...

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 equals 525. The teacher obtains a random sample of 1800 ​students, puts them 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 statistic and the P value.

Math   Statistics-And-Probability   
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Answer #1

Here using ti-83 calculator.

​​​​​​Test statistic = 2.56

p-value = 0.0053

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