## [answered] Mean = 75, SD = 3. Mean = 72, SD = 16 B. Mean = 72, SD = 4

?A.? Mean = 75, SD = 3.5 C. Mean = 72, SD = 16 B.? Mean = 72, SD = 4 D. Mean = 75, SD = 0.875 ??? 17.? Assume that random guesses are made for 10 multiple choice questions on an ACT test and that there are 5 choices for each question with probability of success 0.35.? Find the probability that the number of correct answers is at most 4 (This problem meets all the requirements of a binomial situation.)

?

A. 0.514 B. 0.751 C. 0.942 D. 0.579 5.????? A researcher obtains data by examining police records for the last ten years on violent crimes during Spring Breaks.? Identify the types of study for this description. A.?????? Observational and Retrospective

B.??? Observational and Prospective

C.???? Experimental and Cross-sectional

D.???? Experimental and Retrospective

 12.? If P (A) ? 0.07, which one of the following statements is false? A. The probability of the complement of A is 0.03 B. The probability of event A happening twice in a row (with replacement) is 0.0049. C. A is not an ?unusual? event D. A is not a certain event.

15.????? One card is randomly chosen from a standard deck of 52 cards.If the cards are drawn without replacement, what is the probability that one King and an Ace card are chosen in either order?

 A. ( 4/52 - 4/51) ? ? ? ? ? ? ? ?B. 2(4/52 - 4/51) ? ? ? ? ? ?C. ?2(4/52 + 4/51) ? ? ? ? ? ? ? ? ?D. (4/52 + 4/51)?

??? 17.? Assume that random guesses are made for 10 multiple choice questions on an ACT test and that there are 5 choices for each question with probability of success 0.35.? Find the probability that the number of correct answers is at most 4 (This problem meets all the requirements of a binomial situation.)
A. ? 0.514 ??

B. ? 0.751

C. ? 0.942
D. ? 0.579

22.?The heights of adult males are normally distributed with a mean of 75 inches and a standard deviation of 3.5 inches.
A.?????? 15% ? ? ? ? ?B.????? 38% ? ? ? ? ? ??C.?????? 19% ? ? ? ? ? ?D.????? 12%

23.? Suppose random samples of 16 male heights are selected repeatedly from the population. What is the mean and standard deviation for the sampling distribution of sample means? ?? ?A.? Mean = 75, SD = 3.5 ? ? ? ? B.? Mean = 72, SD = 4 ? ? ? ? ?C. Mean = 72, SD = 16 ? ? ? ? ?

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