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A poll agency reports that 36% of teenagers aged 12 to 17 owned smartphones. Suppose a simple random sample of 110 teenagers is drawn from
A poll agency reports that 36% of teenagers aged 12 to 17 owned smartphones. Suppose a simple random sample of 110 teenagers is drawn from the population. You may assume the sampling distribution is normally distributed. http s:llwww. weba ssign.net;' osa IU index.html#ltoolsetl distribution 3 A) Suppose a sampling distribution for sample proportions was going to be created using 0.36 as the population proportion and 110 as the sample size. What would be the standard deviation(error] associated with distribution? B) In a sample of 110 students what would be the probability that less than 32% of teenagers owned Yes smartphones? $2321 C) In a sample of 110 students what would be the probability that more than 50% of teenagers owned 0-038 smartphones? (10012 . . . . . . 0.034 D) How many standard devratlons away from the population proportion Is a sample proportion of 0.50? 0 021 E) In General, how many standard deviations would a sample proportion need to be from the population 33?; . . ? . proportion to be considered unusual. 0.9988 3.04 0.19 F) Would it be unusual for more than half of the teenagers in a sample of 110 teenagers to have smart 1 phones? 2
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