Find the standardized test statistic estimate, z, to test the hypothesis that p1 > p2. Use a = 0.01. The sample statistics listed below are from independent samples. Sample statistics: n1 = 100, x1 = 38, and n2 = 140, x2 = 50
A) 0.362 B) 2.116 C) 1.324 D) 0.638
Q. 2In how many ways can a club choose a president, a treasurer, a secretary, and three other committee members (with identical duties) from a group of 13 candidates?
A) 205,920 B) 1,235,520 C) 4,826,809 D) 1716
Q. 3Find the standardized test statistic, z to test the hypothesis that p1 = p2. Use a = 0.05. The sample statistics listed below are from independent samples. Sample statistics: n1 = 50, x1 = 35, and n2 = 60, x2 = 40
A) 0.374 B) 0.982 C) 1.328 D) 2.361
Q. 4A confidence interval was used to estimate the proportion of math majors that are female. A random sample of 72 math majors generated the following confidence interval: (0.438, 0.642).
Using the information above, what size sample would be necessary if we wanted to estimate the true proportion to within 4 using 99 reliability? A) 1030 B) 1037 C) 1078 D) 995
Q. 5In how many ways can 6 women and 3 men be seated in a row of 9 seats at a movie theater assuming that all the women must sit together and all the men must sit together?
A) 8640 B) 4320 C) 362,880 D) 512
Q. 6Last year batting averages in professional baseball averaged 0.255 with a high of 0.320 and a low of 0.219 (minimum 250 at-bats). Based on this information, which measure of variation could be calculated?
A) range B) variance
C) standard deviation D) percentile
Q. 7A license plate is to consist of 3 letters followed by 5 digits. Determine the number of different license plates possible if the first letter must be an K , L , or M and repetition of letters and numbers is not permitted.
A) 54,432,000 B) 9,072,000 C) 272,160,000 D) 54,522,000
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