The PTA at Central High School is concerned that students who graduate from the school do not score as well on mathematics achievement tests, on average, as do students from other schools in the district. To address their concerns, the school principal randomly selects 15 students from the graduating class and administers the standardized mathematics achievement test used in that school district. The means core for graduating students in the school district is 98. The scores of the 15 students from Central High are as follows:
(a) State formally the hypotheses necessary to conduct a nondirectional test.
(b) Complete the test at the .05 level of significance and state your conclusion.
Numbers and figures are an essential part of our world, necessary for almost everything we do every day. As important…
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