TABLE 9-9 The President of a University Claimed That the Entering Class

question 82

True/False

TABLE 9-9
The president of a university claimed that the entering class this year appeared to be larger than the entering class from previous years but their mean SAT score is lower than previous years. He took a sample of 20 of this year's entering students and found that their mean SAT score is 1,501 with a standard deviation of 53. The university's record indicates that the mean SAT score for entering students from previous years is 1,520. He wants to find out if his claim is supported by the evidence at a 5% level of significance.
-Referring to Table 9-9, the president can conclude that there is sufficient evidence to show that the mean SAT score of the entering class this year is lower than previous years with no more than a 10% probability of incorrectly rejecting the true null hypothesis.

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Definitions:

Activity Variance

The difference between planned activity levels and actual activity levels, used for budgeting and planning purposes.

Refurbishing Materials

Materials used in the process of cleaning, repairing, and updating products to a like-new condition, often part of a business strategy to offer sustainable or cost-effective options to customers.

Fixed Cost

Expenses that do not change in total over the short term, regardless of the level of production or sales volume.

Flexible Budget

A flexible budget adjusts based on changes in the volume of activity or other relevant factors. It allows for a more accurate comparison of budgeted versus actual costs under varying levels of activity.