Questions from Business Statistics

Q: OrderUp is a service that delivers food that its customers order online

OrderUp is a service that delivers food that its customers order online from participating restaurants. OrderUp claims consistent delivery times for its deliveries. A sample of 22 meal deliveries show...

Q: A sample of 9 days over the past six months showed that

A sample of 9 days over the past six months showed that Philip Sherman, DDS, treated the following numbers of patients at his dental clinic: 22, 25, 20, 18, 15, 22, 24, 19, and 26. If the number of pa...

Q: Passenger Volume on Allegiant Airlines. A sample standard deviation for the

Passenger Volume on Allegiant Airlines. A sample standard deviation for the number of passengers taking a particular Allegiant Airlines flight is 8. A 95% confidence interval estimate of the populatio...

Q: Is there any difference in the variability in golf scores for players

Is there any difference in the variability in golf scores for players on the LPGA Tour (the women’s professional golf tour) and players on the PGA Tour (the men’s professional golf tour)? A sample of...

Q: The grade point averages of 352 students who completed a college course

The grade point averages of 352 students who completed a college course in financial accounting have a standard deviation of .940. The grade point averages of 73 students who dropped out of the same c...

Q: Stable cost reporting in a manufacturing setting is typically a sign that

Stable cost reporting in a manufacturing setting is typically a sign that operations are running smoothly. The accounting department at Rockwell Collins, an avionics manufacturer, analyzes the varianc...

Q: In an effort to make better use of its resources, the

In an effort to make better use of its resources, the New York City Food Bank engaged in lean process improvement. This employee-driven kaizen effort resulted in a new method for packing meals for dis...

Q: Based on 2017 sales, the six top-selling compact cars

Based on 2017 sales, the six top-selling compact cars are the Honda Civic, Toyota Corolla, Nissan Sentra, Hyundai Elantra, Chevrolet Cruze, and Ford Focus (New York Daily News, http://www.nydailynews....

Q: A random sample of final examination grades for a college course follows

A random sample of final examination grades for a college course follows. Use α = .05 and test to determine whether a normal probability distribution should be rejected as being repres...

Q: The Federal Government wants to determine if the mean number of business

The Federal Government wants to determine if the mean number of business emails sent and received per business day by its employees differs from the mean number of emails sent and received per day by...