This test: 39 point(s) possible @ This question: 1 point(s) possible Submit test Question 19 of 39 Use the frequency histogram to complete the following parts. Employee Salaries Q (a) Determine the number of classes. 300 (b) Estimate the greatest and least frequencies. E' 200 9' (0) Determine the class width. g (d) Describe any patterns with the data. 3 100 D) LL 0 34.5 44.5 54.5 64.5 74.5 84.5 94.5 (a) There are classes. (Type a whole number.) (b) The least frequency is about . (Round to the nearest whole number as needed.) The greatest frequency is about . (Round to the nearest whole number as needed.) (c) The class width is . (Type an integer or a decimal. Do not round.) Question 23 of 39 This test: 39 point(s) possible This question: 1 point(s) possible Submit test Complete parts (a) and (b) using the probability distribution below. The number of overtime hours worked in one week per employee Overtime hours 0 1 N 3 4 5 6 Probability 0.037 0.058 0.173 0.293 0.225 0.147 0.068 . . . (a) Find the mean of the probability distribution. H = (Round to one decimal place as needed.)This test: 39 point(s) possible @ This question: 1 point(s) possible Submit test Question 19 of 39 Use the frequency histogram to complete the following parts. Employee Salaries Q (a Determine the number of classes. (,0 O D ,0 ) (b) Estimate the greatest and least frequencies. g 200 (0) Determine the class width. g (d) Descrlbe any patterns with the data. E; 100 [1" LI. 0 34.5 44.5 54.5 64.5 T4.5 84.5 94.5 ' (c) The class width is . (Type an integer or a decimal. Do not round.) (d) What pattern does the histogram show? (:3 A. About half of the employees' salaries are between $50,000 and $69,000. [3' B. Less than half of the employees make between $40,000 and $89,000. c' '3 C. About half of the employees' salaries are between $70,000 and $89,000. :3 D. Most employees make less than $39,000 or more than $90,000. l Question 20 of 39 This test: 39 point(s) possible This question: 1 point(s) possible Submit test The heights of fully grown trees of a specific species are normally distributed, with a mean of 50.5 feet and a standard deviation of 5.50 feet. Random samples of size 17 are drawn from the population. Use the central limit theorem to find the mean and standard error of the sampling distribution. Then sketch a graph of the sampling distribution. . . . The mean of the sampling distribution is Hi = The standard error of the sampling distribution is of = (Round to two decimal places as needed.) Choose the correct graph of the sampling distribution below. O A. O B. O c. 47.8 50.5 53.2 39.5 50.5 61.5 N-@ Question 21 of 39 This test: 39 point(s) possible This question: 1 point(s) possible Submit test Find the indicated probabilities using the geometric distribution, the Poisson distribution, or the binomial distribution. Then determine if the events are unusual. If convenient, use the appropriate probability table or technology to find the probabilities. A football player completes a pass 64.2% of the time. Find the probability that (a) the first pass he completes is the second pass, (b) the first pass he completes is the first or second pass, and (c) he does not complete his rst two passes. (a) P(the first pass he completes is the second pass) = (Round to three decimal places as needed.) (b) P(the first pass he completes is the rst or second pass) = (Round to three decimal places as needed.) (c) P(he does not complete his first two passes) = (Round to three decimal places as needed.) Which of the events are unusual? Select all that apply. :1 A. The event in part (a), P(the rst pass he completes is the second pass), is unusual. :] B. The event in part (b), P(the rst pass he completes is the first or second pass), is unusual.