@my answers 7) Imagine taking many different samples of n=30 values from apopula

Question

@my answers

7) Imagine taking many different samples of n=30 values from apopulation of resting pulse rate values. which one of thesestatistics is mostly likely to have a sampling distribution that isapproximately a normal distribution?

a)the maximum pulse rate in a sample
b)the minimum pulse rate in a sample
c)the mean pulse rate in a sample @
d)the mean pulse rate in a the population

9) you plan to determine an approximate 95% confidence intervalfor a population proportion; you plan to use a conservative marginof error of 2%. how large a sample size do you need?

a. 100
b. 400
c. 2500 @
d. none of the above

Explanation / Answer

7) Imagine taking many different samples of n=30 values from apopulation of resting pulse rate values. which one of thesestatistics is mostly likely to have a sampling distribution that isapproximately a normal distribution?

a)the maximum pulse rate in a sample
b)the minimum pulse rate in a sample
c)the mean pulse rate in asample @
d)the mean pulse rate in a the population

9) you plan to determine an approximate 95% confidence intervalfor a population proportion; you plan to use a conservative marginof error of 2%. how large a sample size do you need?

a. 100
b. 400
c. 2500@   although I got an actual computation of n =(2*1.96/.04)^2 (0.5) (0.5) = 2401
d. none of theabove

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