-=79.95238995 138471 01275 (514.194 n-21 maxX-97 13. How many data items are in

Question

-=79.95238995 138471 01275 (514.194 n-21 maxX-97 13. How many data items are in the set? a. n-21 b. n-79 c. n-14 d. n-1679 What is the sum of the data? a. sum = 79.95 14. b. sum-138471 c. sum= 1679 d. sum-14.1941 15. Identify the mean, median, and mode, if possible a. mean-79.95,median-82; mode- 81 b. mean-82:median-79.95; mode 82 c. mea 79.95; median 82, mode not possible d. mean-79.95, median 79.95; mode 82 16. Compute 3-3 7 C) 840 D) A) 210 70 B) 35 17-The random variable x represents the number of boys in a family with three children. Assuming that births of boys and girls are equally likely, find the mean and standard deviation for the random variable x. A) mean: 1.50, standard deviation: .76 deviation: 87 C) mean: 1.50; standard deviation: 87 deviation: 76 B) mean: 2.25; standard D) mean: 2.25; standard

Explanation / Answer

Please don't post the entire assignment, as per forum rules. Here' the answer to Q21

21. Mean = 60000

Stdev = 3000

P(X<c) = .96

So, P(Z< c-60000/3000) = .96

c = qnorm(0.05, mean=3500, sd=5000) = 65250

D is correct

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