Homework: Homework 6 Score: 0 of 1 pt 7.3.16-T 6 of 6( complete Hw Score: 375%,

Question

Homework: Homework 6 Score: 0 of 1 pt 7.3.16-T 6 of 6( complete Hw Score: 375%, 225 of 6 pts oeston Help * Accoring to a pol onconsumer vior, 38% ofpeople say they wil oreyersder mnatredinPer ehrrymn ingáfew ear Suppose you select a random sample of 100 nespondents Complete parts (a) hrough ie) below a.what is he probably hatthe sample we have bet een 27% and 3 % who say hey w corsdrotys .dredby#can nter coutry whi' puachasing a new car? The probabley is(Round to tour decimal es as needed) Enter your answer inthe answer box and then cick Check Answer Clear Al

Explanation / Answer

Mean = 0.36*100 = 36
Variance = 0.36*0.64*100 = 23.04
Std. Dev. = 4.8

Using binomial to normal approximation,
P(27 <= X <= 38) = P(X <= 38.5) - P(X <= 27.5) = P(Z < (38.5-36)/4.8) - P(Z < (27.5-36)/4.8)
= 0.6988 - 0.0383 = 0.6605

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