Questions from Applied Statistics

Q: Identify the following data as either time series or cross-sectional

Identify the following data as either time series or cross-sectional. a. The number of rooms booked each night for the month of January 2014 at a Vail Resorts hotel. b. The amount spent on books at t...

Q: Would you use a sample or a census to measure each of

Would you use a sample or a census to measure each of the following? Why? If you are uncertain, explain the issues. a. The number of cans of Campbell’s soup on your local supermarket’s shelf today at...

Q: Would you use a sample or census to measure each of the

Would you use a sample or census to measure each of the following? a. The number of workers currently employed by Campbell Soup Company. b. The average price of a can of Campbell’s Cream of Mushroom...

Q: Is each of the following a parameter or a statistic? If

Is each of the following a parameter or a statistic? If you are uncertain, explain the issues. a. The number of cans of Campbell’s soup sold last week at your local supermarket. b. The proportion of...

Q: Is each of the following a parameter or statistic?

Is each of the following a parameter or statistic? a. The number of visits to a pediatrician’s office last week. b. The number of copies of John Grisham’s most recent novel sold to date. c. The total...

Q: At an outpatient mental health clinic, appointment cancellations occur at a

At an outpatient mental health clinic, appointment cancellations occur at a mean rate of 1.5 per day on a typical Wednesday. Let X be the number of cancellations on a particular Wednesday. (a) Justify...

Q: Recently, researchers estimated that 76.8 percent of global e

Recently, researchers estimated that 76.8 percent of global e-mail traffic was spam. Could a census be used to update this estimate? Why or why not?

Q: A certain health maintenance organization (HMO) is studying its daily

A certain health maintenance organization (HMO) is studying its daily office routine. They collect information on three variables: the number of patients who visit during a day, the patient’s complain...

Q: There are 327 official ports of entry in the United States.

There are 327 official ports of entry in the United States. The Department of Homeland Security selects 15 ports of entry at random to be audited for compliance with screening procedures of incoming t...

Q: The IRS estimates that the average taxpayer spent 3.7 hours

The IRS estimates that the average taxpayer spent 3.7 hours preparing Form 1040 to fi le a tax return. Could a census be used to update this estimate for the most recent tax year? Why or why not?