BUSINS STATISTICS #12. According to a study of the TV viewing habits of adolesce
ID: 3364902 • Letter: B
Question
BUSINS STATISTICS #12. According to a study of the TV viewing habits of adolescents, the overage number of weekly viewing hours for MTV is -19 hours with a standard deviation of = 3.8 hours If a sample of 64 teenagers is randomly selected from the population, determine (4) the mean of the samopling distnbution (in hours) standard error of the mean of the sampling distribution of the mean ( in hours) 13. The registrar at a large university states that the mean grade point average of all the students = 2.95 with a population standard deviation of = 0.2 (A) Determine the mean of the sampling distribution, the sampling distribution mean consists of all possible sample means from samples of size 25. (B) Determine the standard error af the mean of the sampling distribution it the sampling distribution mean consists of all possible sample means from samples of size 25 What effect does increasing the sample size have an the mean and standard error of the sampling distribution? 4.Explanation / Answer
12)
mean = 19
std. dev. = 3.8
n = 64
a) mean of sampling distribution = 19
b) SE = 3.8/sqrt(64) = 0.475
13)
mean = 2.95
std. dev. = 0.2
a)
mean of sampling distribution = 2.95
b)
SE = 0.2/sqrt(25) = 0.04
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