Question: Do what is asked Consider yourself as a statistician. The Graduate Record Exam (GRE) is a standardized test required to be admitted to many graduate

Do what is asked

Consider yourself as a statistician.

The Graduate Record Exam (GRE) is a standardized test required to be

admitted to many graduate schools. A high score in the GRE makes admission

more likely. According to the Educational Testing Service, the mean score for

takers of GRE who do not have training courses is 555 with a standard deviation

of 139. Brainpower Philippines (BP) offers expensive GRE training courses,

claiming their graduates score better than those who have not taken any training

courses. To test the company's claim, you as a statistician randomly selected 30

graduates of BP and asked their GRE scores. The random sample of 30 graduates

he obtains recorded a mean score of 560 in GRE.

Formulate the null and alternative hypotheses, then identify the test statistic to be used,

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