Question

Question 27 5 pts An intern is working for Pacific TV (PTV), a small cable and Internet provider, and has proposed some questions that might be used to assess how much customers are willing to pay for a new PTV service. The intern got a set of 12 with mean of $60.2 and standard deviation of $14.5. If the intern wants to buy a $5 gift for each person he interviews. Is $1000 budget enough if PTV asks for a confidence interval width of 3 units with 90% confidence? Enough Not enough Question 28 5 pts A researcher claims that a person uses less than 65 tissues during a cold. Suppose a sample of 50 people was selected with a mean of 60 tissues and standard deviation of 16 tissues during a cold. Given that a-0.05. Is there sufficient evidence to indicate that a person uses less than 65 tissues during a cold? No Yes

Answer 1

(27 Here n=12 x = 6o. since his bodget zo $1000 He buys gift for every person he tategoriews at 85 each - A budget of $1000 will salzx fg 1000 2oo peopee since interviewing a aid to OF 12 peogle garon gol. I 2 x 1.796 X 14--5 =15. 0354 ना And He wants a wide of 3 so, He Needs a much Ъгазет smy le le so I sangle of size. 200 ux Enough Coy) size than 12

28 Ho fer, 65 tz popen mean HaiH<65 n 25o. s = Sod= 16. Text statistie at doon as to & 2 z NRCX-seo) S 50 (6o - 65) 16. E ='- 2.2097-1000 Nou prawe =P['T <-2. 2027 CS wethaf n-1 =50-1 = 49 DO o.or591 (Focom table, Prowe <a so, ReJeet Ho. Hence Tyes There aX SUFFicient Evidence
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