Questions from Business Statistics

Q: The following table shows the total return and the number of funds

The following table shows the total return and the number of funds for four categories of mutual funds. a. Using the number of funds as weights, compute the weighted average total return for these m...

Q: Suppose that at the beginning of Year 1 you invested $10

Suppose that at the beginning of Year 1 you invested $10,000 in the Stivers mutual fund and $5000 in the Trippi mutual fund. The value of each investment at the end of each subsequent year is provided...

Q: Consider a sample with data values of 27, 25, 20

Consider a sample with data values of 27, 25, 20, 15, 30, 34, 28, and 25. Compute the range, interquartile range, variance, and standard deviation.

Q: Data collected by the Oil Price Information Service from more than 90

Data collected by the Oil Price Information Service from more than 90,000 gasoline and convenience stores throughout the U.S. showed that the average price for a gallon of unleaded gasoline was $3.28...

Q: The following table displays round-trip flight prices from 14 major

The following table displays round-trip flight prices from 14 major U.S. cities to Atlanta and Salt Lake City. a. Compute the mean price for a round-trip flight into Atlanta and the mean price for a...

Q: Varatta Enterprises sells industrial plumbing valves. The following table lists the

Varatta Enterprises sells industrial plumbing valves. The following table lists the annual sales amounts for the different salespeople in the organization for the most recent fiscal year. a. Compute...

Q: 100 companies that spend the most on advertising. Consumer-goods

100 companies that spend the most on advertising. Consumer-goods company Procter & Gamble has often topped the list, spending billions of dollars annually. Consider the data found in the file Advertis...

Q: Many airlines use surveys to collect data on customer satisfaction related to

Many airlines use surveys to collect data on customer satisfaction related to flight experiences. Completing a flight, customers receive an email asking them to rate a variety of factors, including th...

Q: Scores turned in by an amateur golfer at the Bonita Fairways Golf

Scores turned in by an amateur golfer at the Bonita Fairways Golf Course in Bonita Springs, Florida, during 2017 and 2018 are as follows: a. Use the mean and standard deviation to evaluate the golfe...

Q: The results of a national survey showed that on average, adults

The results of a national survey showed that on average, adults sleep 6.9 hours per night. Suppose that the standard deviation is 1.2 hours. a. Use Chebyshev’s theorem to calculate the percentage of i...