Questions from Analytics

Q: PLE has developed a prototype for a new snow blower

PLE has developed a prototype for a new snow blower for the consumer market. This can exploit the company’s expertise in small-gasoline-engine technology and also balance seasonal demand cycles in the...

Q: A national homebuilder builds single-family homes and condominium-style townhouses. The

A national homebuilder builds single-family homes and condominium-style townhouses. The Excel file House Sales provides information on the selling price, lot cost, type of home, and region of the coun...

Q: The Excel file Auto Survey contains a sample of data

The Excel file Auto Survey contains a sample of data about vehicles owned, whether they were purchased new or used, and other types of data. Use the Descriptive Statistics tool to summarize the numeri...

Q: Compute the z-scores for the data in the Excel file

Compute the z-scores for the data in the Excel file Airport Service Times. How many observations fall farther than three standard deviations from the mean? Would you consider these as outliers? Why or...

Q: Repeat the sampling experiment in Example 6.3 for sample sizes

Repeat the sampling experiment in Example 6.3 for sample sizes 50, 100, 250, and 500. Compare your results to the example and use the empirical rules to analyze the sampling error. For each sample, al...

Q: Use the Manufacturing Measurements data to compute sample averages, assuming

Use the Manufacturing Measurements data to compute sample averages, assuming that each row in the data file represents a sample from the manufacturing process. Plot the sample averages on a line chart...

Q: Find the mean and variance of a deck of 52

Find the mean and variance of a deck of 52 cards, where an ace is counted as 11 and a picture card as 10. Construct a frequency distribution and histogram of the card values. Shuffle the deck and deal...

Q: Rosenberg Land Development (RLD) is a developer of condominium properties

Rosenberg Land Development (RLD) is a developer of condominium properties in the Southwest United States. RLD has recently acquired a 40.625-acre site outside Phoenix, Arizona. Zoning restrictions all...

Q: A producer of computer-aided design software for the aerospace industry

A producer of computer-aided design software for the aerospace industry receives numerous calls for technical support. Tracking software is used to monitor response and resolution times. In addition,...

Q: A Midwest pharmaceutical company manufactures individual syringes with a self-contained,

A Midwest pharmaceutical company manufactures individual syringes with a self-contained, single dose of an injectable drug. In the manufacturing process, sterile liquid drug is poured into glass syrin...