Category Statistics

a. .025 to .05. b. .01 to .025. c. .05 to .10. d. .005 to .01. 2. A Type I error is committed when a. the critical value is greater than the value of the test statistic. b. sample data…

Number of Cars Arrivingin a 10-Minute Interval Frequency 0 3 1 10 2 15 3 23 4 30 5 24 6 20 7 13 8 8 9 or more 4 150 The p-value is a. between .05 and .1. b. greater…

n = 30 H0: σ2 = 500 s2 = 625 Ha: σ2 ≠ 500 The test statistic equals a. 24.00. b. 36.25. c. 23.20. d. 37.50 2. The contents of a sample of 26 cans of apple juice showed a standard deviation of .06 ounces. We…

a. When standardized, it is the t distribution. b. When standardized, it is exactly the standard normal distribution. c. It is approximately normal as long as n ≥ 30. d. It is approximately normal as long as np ≥ 5 and n(1 – p) ≥ 5. 2. A…

Question-1. An experiment has three steps with three outcomes possible for the first step, two outcomes possible for the second step, and four outcomes possible for the third step. How many experimental outcomes exist for the entire experiment? [24] Question-2.…

a. is not rejected. b. could be rejected or not rejected depending on the sample size. c. could be rejected or not rejected depending on the sample mean. d. is rejected. 2. If the cost of making a Type I…

If A and B are independent events with P(A) = .38 and P(B) = .55, then P(A | B) = a. .550 b. .38 c. 0 d. .209 The symbol ∩ shows the _____. a. union of events b. intersection of events c. sum of the probabilities of events…

Excel’s _____ function can be used to compute the expected value of a discrete random variable. a. MEDIAN b. SUMPRODUCT c. VAR d. AVERAGE Exhibit 5-8The student body of a large university consists of 60% female students. A random sample of…

a. 10.117 b. 10.851 c. 31.410 d. 30.144 2. Which of the following rejection rules is proper? a. Reject H0 if p-value ≥ α b. Reject H0 if p-value ≤ Fα. c. Reject H0 if F ≤ Fα d. Reject H0 if F ≥ Fα. 3. Consider the following hypothesis problem. n = 23 s2 = 60 H0: σ2 ≤ 66 Ha: σ2 >…

Question-1. The manager of the Danvers-Hilton Resort Hotel stated that the mean guest bill for a weekend is  or less. A member of the hotel’s accounting staff noticed that the total charges for guest bills have been increasing in recent months.…