Randori, selected s de e par pated n expe en est 1 abl , to termne en e minu or
ID: 2923205 • Letter: R
Question
Randori, selected s de e par pated n expe en est 1 abl , to termne en e minu or s seconds has passed Fo y de s eked a sa ple mean 60 s cor s Assm that 11 se on s, con and me e a confidence int val est at o e t on me al students Cickhere to view page 1 of the sandard noma dst buton table, Cidk here to view page 2 of the sanderd nomal distr buton tabla What is the 90% confidence interval for the population mean ? Type i tegers or decima's rounded to ore decimal place as needed. Based on the resut, is it ikey that tha sludems esimates have a mean that is reasonably dose to sity seconds? OA. Yes, because the corfidence irterval indudes sixty seconds. @b. No, because the corfidence rterval indudes sixty seconds. OC. No, because the confidenoe irterval des nat include sity seconds D. Yes, because the confidence interval does not include sity seconsExplanation / Answer
Margin of error = (1.6.45*11.3)Sqrt(40) = 2.9388
90$% Interval
(60.5-2.9388, 60.5+2.9388)
= (57.6, 63.4)
b) Option A is Correct
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