11.

\f\fIs the mean weight of university students different from 69 kg? To test this, you take a random sample of 85 students, finding a mean of 71 kg with a standard deviation of 9.4 kg. Carry cut a hypothesis test using a significance level of 0.07 to test the given claim. 0 Fail to reject the null hypothesis of u=69 with a Pvalue of 0.9734. There is no evidence that the average weight of all students has changed. 0 Reject the null hypothesis of p=69 with a Pvalue of 0.0182. There is sufficient evidence that the average weight of all students has changed. 0 Reject the null hypothesis of u=69 with a pvalue of 0.0498. There is sufficient evidence that the weight of female students has changed. 0 Reject the null hypothesis of p=69 with a pvalue of 0.0531. There is sufficient evidence that the weight of female students has changed. 0 Fail to reject the null hypothesis of u=69 with a Pvalue of 0.0266. There is no evidence that the average weight of all students has changed. 0 There is not enough information to perform the test. \f\f