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A school district has a standardized test that it uses to sort students into magnet schools, where the test is on a 200-point scale.
A school district has a standardized test that it uses to sort students into magnet schools, where the test is on a 200-point scale. The superintendent's office wants to determine whether male and female students have approximately equal scores on the test. Scores for a random sample of 30 male students and 30 female students are taken. Assume that the population standard deviation of scores is 18 points for both male and female students, and that the scores are normally distributed for both male and female students. Let the scores of the male students be the first sample, and let the scores of the female students be the second sample. The consulting group conducts a two-mean hypothesis test at the 0.10 level of significance, to test if there is evidence that male and female students have different scores, on average. (a) Which answer choice shows the correct null and alternative hypotheses for this test? Select the correct answer below: OH H H H H1 H2, which is a two-tailed test = O Ho HH2 Ha H1 H2, which is a left-tailed test. OH = H H1>2, which is a right-tailed test. OH H H H = 2, which is a two-tailed test.
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