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Question 21 (8 points) A sales and marketing management magazine conducted a survey on salespeople cheating on their expense reports and other unethical conduct. In the survey on 200 managers, 58% of the managers have caught salespeople cheating on an expense report, 50% have caught salespeople working a second job on company time, 22% have caught salespeople listing a "strip bar" as a restaurant on an expense report, and 19% have caught salespeople giving a kickback to a customer. Construct a 95% confidence interval estimate of the population proportion of managers who have caught salespeople working a second job on company time. (Keep four decimal places) Question 21 options: 0.4419 to 0.5582 0.4020 to 0.5980 0.4307 to 0.5693 0.4208 to 0.5793 Question 22 (8 points) A wealthy real estate investor wants to decide whether it is a good investment to build a high-end shopping complex in a suburban county in Houston. His main concern is the total market value of the 3,605 houses in the suburban county. He commissioned a statistical consulting group to take a sample of 200 houses and obtained a sample mean market price of $225,000 and a sample standard deviation of $38,700. What is the upper limit of the 90% confidence interval for the mean market price of the houses in the suburban county constructed by the consulting group? (Keep whole dollars)

          Question 21 (8 points)
A sales and marketing management magazine conducted a survey on
salespeople cheating on their expense reports and other unethical
conduct. In the survey on 200 managers, 58% of the managers have
caught salespeople cheating on an expense report, 50% have caught
salespeople working a second job on company time, 22% have caught
salespeople listing a "strip bar" as a restaurant on an expense
report, and 19% have caught salespeople giving a kickback to a
customer.
Construct a 95% confidence interval estimate of the population
proportion of managers who have caught salespeople working a second
job on company time.  (Keep four decimal places)
Question 21 options:
0.4419  to  0.5582
0.4020  to  0.5980
0.4307  to  0.5693
0.4208  to  0.5793
Question 22 (8 points)
A wealthy real estate investor wants to decide whether it is a
good investment to build a high-end shopping complex in a suburban
county in Houston. His main concern is the total market value of
the 3,605 houses in the suburban county. He commissioned a
statistical consulting group to take a sample of 200 houses and
obtained a sample mean market price of $225,000 and a sample
standard deviation of $38,700.
What is the upper limit of the 90% confidence interval for the
mean market price of the houses in the suburban county constructed
by the consulting group?  (Keep whole dollars)

Added by David T.

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