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One card is drawn from a standard deck of 52 cards. Find the probability of drawing the following an eight or a spade MY NOTES 4. (-/0.55 Points DETAILS MY NOTES According to a rating, survey 49% of the households in a certain city tune in to the local evening TV news. If eight households are visited at random, what is the probability that five of them will have their television tuned to the local news? (Round your answer to five decimal places. 5. [-/1.66 Points DETAILS MY NOTES Suppose that the length of research papers is uniformly distributed from 9 to 23 pages. We survey a class in which 55 research papers were turned into a professor. We are interested in the average Tength of the research papers Give the distribution of X. X 6. [/0.55 Points DETAILS MY VOTES Suppose that the length of research papers is uniformly distributed from 3 to 21 pages. We survey a class in which 55 research papers were turned into a professor. We are interested in the average length of the research papers. MX 7. [-70.55 Points] DETAILS MY NOTES Suppose that the length of research papers is uniformly distributed from a to 22 pages. We survey a class in which 55 research papers were turned into a professor we are interested in the wverage length of the research papers. OX (rounded to two decimal places)

Answer 1

A-3 Total card 252 Pf an eight a spude) 16 3 + 13 52 52 0.3076 A-4 P = 0,48 9 -0.52 x 25 for binomiced distribution 2 (X =1) n-x pt. na. PA252 385 (0.487 (0.6279 O, 20063 A-5 X~ Uca, b2 here a, = 9 b =23 6 x ~ U( 9,23) Scanned with Caurscanner

A-6 x~U (8,21) Everage My = atb 2 = 8+2) a lx = 14.5 A-7 X^U (8,22) бос : Chra) 12 = (22-872 12 = 16.33 Scanned with CamScanner