Question Help Based on a smartphone survey, assume that 47% of adults with smart

Question

Question Help Based on a smartphone survey, assume that 47% of adults with smartphones use them in theaters. In a separate survey of 240 adults with smartphones, it is found that 95 use them in theaters. a. If the 47% rate is correct, find the probability of getting 95 or fewer smartphone owners who use them in theaters b. Is the result of 95 significantly low? a f the 47% rate is correct, the probability of getting 95 or fewer smartphone owners who use them in theaters (Round to four decimal places as needed.) b. Is the result of 95 significantly low? Enter your answer in the answer box

Explanation / Answer

a) here mean =np=240*0.47=112.8 and std deviaiton=(np(1-p))1/2 =7.732

therefore P(X<=95)=P(Z<(95.5-112.8)/7.732)=P(Z<-2.2375)=0.0126

b)

Yes because.....is less than ,,,,,,,,,,,,,,,,,,,,,,,wich is 0.05/

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