Questions from Applied Statistics

Q: The median life span of a mouse is 118 weeks. (

The median life span of a mouse is 118 weeks. (a) Would you expect the mean to be higher or lower than 118? (b) Would you expect the life spans of mice to be normally distributed? Explain.

Q: On Professor Hardtack’s last cost accounting exam, the mean score was

On Professor Hardtack’s last cost accounting exam, the mean score was 71, the median was 77, and the mode was 81. (a) Sketch the distribution, based on these statistics. (b) What factors might cause t...

Q: A manufacturing project has five independent phases whose completion must be sequential

A manufacturing project has five independent phases whose completion must be sequential. The time to complete each phase is a random variable. The mean and standard deviation of the time for each phas...

Q: A certain outpatient medical procedure has five steps that must be performed

A certain outpatient medical procedure has five steps that must be performed in sequence. (a) Assuming that the time (in minutes) required for each step is an independent random variable, find the mea...

Q: Malaprop Ltd. sells two products. Daily sales of product A

Malaprop Ltd. sells two products. Daily sales of product A have a mean of $70 with a standard deviation of $10, while sales of product B have a mean of $200 with a standard deviation of $30. Sales of...

Q: The weight of a Los Angeles Lakers basketball player averages 233.

The weight of a Los Angeles Lakers basketball player averages 233.1 pounds with a standard deviation of 34.95 pounds. To express these measurements in terms a European would understand, we could conve...

Q: A manufacturer fills one-gallon cans (3,785 ml

A manufacturer fills one-gallon cans (3,785 ml) on an assembly line in two independent steps. First, a high-volume spigot injects most of the paint rapidly. Next, a more precise but slower spigot tops...

Q: The Rejuvo Corp. manufactures granite countertop cleaner and polish. Quarterly

The Rejuvo Corp. manufactures granite countertop cleaner and polish. Quarterly sales Q is a random variable with a mean of 25,000 bottles and a standard deviation of 2,000 bottles. Variable cost is $8...

Q: The time required to verify and fill a common prescription at a

The time required to verify and fill a common prescription at a neighborhood pharmacy is normally distributed with a mean of 10 minutes and a standard deviation of 3 minutes. Find the time for each ev...

Q: In September, demand for industrial furnace boilers at a large plumbing

In September, demand for industrial furnace boilers at a large plumbing supply warehouse has a mean of 7 boilers with a standard deviation of 2 boilers. The warehouse pays a unit cost of $2,225 per bo...