Essay
One method for estimating the availability of office space in large cities is to conduct a random sample of offices, and calculate the proportion of offices currently being used. Suppose that real estate agents believe that π = 0.70 of all offices are currently occupied, and decide to take a sample to assess their belief. They are considering a sample size of n = 40.
a) Show that this sample size is large enough to justify using the normal approximation to the sampling distribution of p.
b) What is the mean of the sampling distribution of p if the real estate agents are correct? c) What is the standard deviation of the sampling distribution of p if the real estate agents are correct?
d) If the real estate agents are correct, what is the probability that a sample proportion, p, would differ from π = 0.70 by as much as 0.05?
Correct Answer:
Verified
a) 
b)
c)
d) =...View Answer
Unlock this answer now
Get Access to more Verified Answers free of charge
Correct Answer:
Verified
b)
c)
d)
=...View Answer
Unlock this answer now
Get Access to more Verified Answers free of charge
Q12: The sampling distribution of p tends to
Q13: The principal at Thomas Jefferson High School
Q14: Some biologists believe the evolution of handedness
Q15: What is a sampling distribution of a
Q16: If π = 0.90, a sample size
Q18: Consider a sample from a skewed population.
Q19: How are the quantities, <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB7678/.jpg" alt="How
Q20: Suppose we artificially categorize populations as approximately
Q21: The principal at John F. Kennedy High
Q22: According to internal testing done by the