A university interested in tracking its honors program believes that the proportion of graduates with a GPA of 3.00 or below is less than 0.11. In a sample of 280 graduates, 25 students have a GPA of 3.00 or below. The value of the test statistic and its associated p-value are __________.Multiple Choicet279 = −1.11 and p-value = 0.0768z = −1.11 and p-value = 0.0768t279 = −1.11 and p-value = 0.1335z = −1.11 and p-value = 0.1335

A university is interested in promoting graduates of its honors program by establishing that the mean GPA of these graduates exceeds 5.50. A sample of 37 honors students is taken and is found to have a mean GPA equal to 5.60. The population standard deviation is assumed to equal 0.40. The parameter to be tested is __________

A student in a statistics class needs to do a project and decides to find out if the average high school GPA of students in a statistics course at her university is higher than the average high school GPA for their university. The university’s average high school GPA of enrolled students in their year was 4.41.She emails a survey to all of her friends that are taking statistics and asks them what their high school GPA is. Her sample contains 18 responses. She chooses a 5% level of significance. From her data, she calculates a t-test statistic of approximately 1.41 with a p-value of about 0.08. What can she conclude? The data is not statistically significant. In other words, the data do not provide enough evidence to conclude that the mean GPA of students taking statistics at her university is higher than 4.41. The data is statistically significant. In other words, the data do provide enough evidence to conclude that the mean GPA of students taking statistics at her university is higher than 4.41. Nothing. The conditions for use of a t-test are not met. She cannot trust that the p-value is accurate for this reason.

Your study is only valid if your p-value is < 0.05.Group of answer choicesTrueFalse

Exam GradesScore Count[40–50) 1[50–60) 2[60–70) 4[70–80) 5[80–90) 2[90–100] 1What percentage of students earned less than a grade of 70 on the exam?9%15%47%53%93%

Suppose that a major polling organization wanted to test the hypothesis that there was a change in the president’s “approval rating” since last month. Last month, 35% of the representative sample of registered voters approved of the president. For this month, the null hypothesis was that the approval rating equals 35% and the alternative hypothesis is that the approval rating does not equal 35%. The significance level for this test was 0.05.The results of the hypothesis test of the new survey showed a p-value of 0.008.Which of the following statements is correct? Check all that apply. The results were statistically significant. The results were not statistically significant. The null hypothesis should be rejected. The null hypothesis should be accepted. The null hypothesis cannot be rejected.