Question

The owner of a football team claims that the average attendance at games is over 561, and he is therefore justified in moving the team to a city with a larger stadium. Assuming that a hypothesis test of the claim has been SELECT ALL APPLICABLE CHOICES A) There is not sufficient evidence to support the claim that the mean attendance is less than 561 B) There is sufficient evidence to support the claim that the mean attendance is greater than tharn 561 at the conclusion is failure to There is not sufficient evidence to support the claim that the mean attendance is greater than 561 reject the null hypothesis, state the conclusion in nontechnical terms D) There is sufficient evidence to support the claim that the mean attendance is less than 561 E) None of these 10 Express the null hypothesis and the alternative hypothesis in symbolic form. The principal of a middle school claims that test scores of the seventh-graders at her school vary less than the test scores of seventh-graders at a neighboring school, which have variation described by ơ- 14.7 SELECT ALL APPLICABLE CHOICES Ho : ơ-14.7 Ho: σ-14.7 H1 : σ<14.7 H1 : σ>14.7 C) Ho : σ>14.7 Ho : ơ<14.7 Ha σ14.7 H1 : σ>14.7 - E) None of these

Answer 1

Answer

(1) Claim is that "average attendance at games is over 561". So, null hypothesis for this case would be that "average attendance at games is equal to 561" and alternate hypothesis would be the claim, i.e. "average attendance at games is over or more than 561"

It is given that null hypothesis is not rejected, so we can say that there is insufficient evidence to support the claim that the average attendance at games is over 561

So, option C is correct answer

(2) Claim is that the test scores of 7th graders vary less than the test scores of 7th graders at neighboring school, i.e. standard deviation is small.

So, for null hypothesis, we assume that the standard deviation is either equal or greater than the standard deviation of 7th graders in neighboring school.

For alternate hypothesis, the claim is going to be our alternate hypothesis.

so, we can write it as

So, option A is correct answer.