Question

The Graduate Management Admission Test (GMAT) is taken by individuals interested in pursuing graduate management education. GMAT scores are used as part of the admissions process for more than 6100 graduate management programs worldwide. The mean score for all test‑takers is 550 with a standard deviation of 120 . A researcher in the Philippines is concerned about the performance of undergraduates in the Philippines on the GMAT. She believes that the mean scores for this year's college seniors in the Philippines who are interested in pursuing graduate management education will be less than 550 . She has a random sample of 250 college seniors in the Philippines interested in pursuing graduate management education take the GMAT. Suppose we know that GMAT scores are Normally distributed with a standard deviation σ = 120 . State the null and alternative hypotheses for the study of the performance on the GMAT of college seniors in the Philippines.

Answer 1

Answer:

Null hypothesis: The average GMAT exam taker would score 550 in the GMAT EXAMS.

Alternative hypothesis: The average GNAT exam taker would score less than 550 in the GMAT exams.

Step-by-step explanation:

In symbolic form

Null hypothesis H0: U = 550

Alternative hypothesis. H1: U < 550

Null hypothesis is the original or normal outcome while alternative hypothesis is the outcome you expect to get which deviates from the norm. (Please note that in the above calculation is meant to be H subscript 0 for the null hypothesis and H subscript 1 for the alternative hypothesis..) U in both cases represents the mean.