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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 null hypothesis would be rejected if a 10% probability of committing a Type I error is allowed.
Q2: Referring to Table 10-1, what is the
Q3: The width of a confidence interval estimate
Q8: Referring to Table 7-5, what is the
Q13: Referring to Table 9-9, the null hypothesis
Q31: Referring to Table 10-12, the null hypothesis
Q72: The county clerk wants to estimate the
Q76: Referring to Table 11-8, what is the
Q85: Referring to Table 10-6, what is the
Q110: Referring to Table 7-7, _ % of
Q128: Referring to Table 11-3, based on the