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_ m 51 Hkai lntm '0 RND Valiabli X 6 9 O Q Q https://www.webassign.net/web/Student/AssignmentResponses... {3 @I 0i 6'\" 5:: g . {3 I {'5 . \"h 3. [0.5/1 Points] DETAILS PREVIOUS ANSWERS BBUNDERSTAT1 2 5.1.006. MY NOTES ASK YOUR TEACHER Consider the probability distribution of a random variable x. Is the expected value of the distribution necessarily one of the possible values of x? No. The expected value can be a value different from the exact value of x. 0 Yes. The expected value can never be a value from the exact value of x. O No. The expected value will never be one of its possible values of x. I 0 Yes. The expected value must always be one of its possible values of x. I Explain or give an example. I This answer has not been graded yet. Need Help? i ,0 Type here to search _ m 51 Hka lntm '0 RND Vaflabl'X 969 http5: l/wwwwebassign. net/web/Student/Assignment Responses... {3 (! lahm IsiEVi. I lrLJLJ A sale or purchased with a coupon. IE USE SALT For the 62and-over group, use the midpoint 67 years. 1828 2939 4050 5161 62 and over 23 34 45 56 67 6% 41% 25% 13% 1 5% Yes. The events are distinct and the probabilities sum to 1. O No. The events are distinct and the probabilities sum to 1. 0 Yes. The events are distinct and the probabilities do not sum to 1. 0 Yes. The events are indistinct and the probabilities sum to less than 1. O No. The events are indistinct and the probabilities sum to more than 1. V ,0 Type here to search (3) Using the age midpoints x and the percentage of super shoppers, do we have a valid probability distribution? Explain. What is the age distribution of promotion-sensitive shoppers? A supermarket super shopper is dened as a shopper for whom at least 70% of the items purchased were on (b) Use a histogram to graph the probability distribution of part (a). (Because the data table has summarized the data into categories, use SALT to create a bar chart.) @ Home | MyOttawa x Content X VA 5.1 Hmwk - Intro to RND Variable X X https://www.webassign.net/web/Student/Assignment-Responses... sd 53 40- 40- 30 30- Supr Shpprs 20 Supr Shpprs 20 10 10 23 34 45 56 67 23 34 45 56 67 Age O Age O (c) Compute the expected age u of a super shopper. (Round your answer to two decimal places.) M = 41.70 X yr (d) Compute the standard deviation o for ages of super shoppers. (Round your answer to two decimal places.) 0 = yr Need Help? Read It Master It Type here to search O W 45OF 8:50 AM 2/7/2022m 51 Hkai Intro to RND variabl' X 6 9 O Q Q https://www.webassign.net/web/Studant/AssignmentResponses... {3 (! 0i 6'" 5:: g . {3 I {'5 . \"h I A What was the age distribution of nurses in Great Britain at the time of Florence Nightingale? Suppose we have the following information. Note: In 1851 there were 25,466 nurses in Great Britain. 20-29 30-39 40-49 50- 59 60-69 70-79 80+ 24.5 34.5 44.5 54.5 64.5 74.5 84.5 5.4% 9.2% 19.1% 29.2% 25.5% 10.0% 1.6% E USE SALT (a) Using the age midpoint: x and the percent of nurses, do we have a valid probability distribution? Explain. 0 Yes. The events are distinct and the probabilities do not sum to 1. O No. The evenls are indistinct and the probabilities sum to 1. O No. The evenl: are indistinct and the probabilities do not sum to 1. v I (b) Use a histogram to graph the probability distribution in part (a). (Because the data table has summarized the data into categories, use SALT to create a bar chart.) (9 Yes. The events are distinct and the probabilities sum to 1. 25 25 an 20 i of Nurses I5 I of Nurses 15 10 10 ,0 Type here to search @ Home | MyOttawa x Content X VA 5.1 Hmwk - Intro to RND Variable X X https://www.webassign.net/web/Student/Assignment-Responses... sd 53 O O 25 25 20- 20 of Nurses 15 $ of Nurses 15- 10 10 LO 24.5 34.5 44.5 54.5 64.5 74.5 84.5 24.5 34.5 44.5 54.5 64.5 74.5 84.5 Age Age O