# Question

If your data set is normally distributed, what proportion of the individuals do you expect to find:

a. Within one standard deviation from the average?

b. Within two standard deviations from the average?

c. Within three standard deviations from the average?

d. More than one standard deviation from the average?

e. More than one standard deviation above the average? (Be careful!)

a. Within one standard deviation from the average?

b. Within two standard deviations from the average?

c. Within three standard deviations from the average?

d. More than one standard deviation from the average?

e. More than one standard deviation above the average? (Be careful!)

## Answer to relevant Questions

How would your answers to question 6 change if the data were not normally distributed? Your firm’s total advertising budget has been set for the year. You (as marketing manager) expect to spend about $1,500,000 on TV commercials, with an uncertainty of $200,000 as the standard deviation. Your advertising ...Consider the price of a hotel room in 20 U.S. cities (Table 5.5.8). a. Find the average price of a major-city hotel room in the United States, based on this data set. b. Find the sample standard deviation of these prices. c. ...Consider the running time of movies from Table 4.3.10. a. Find the standard deviation. What does this tell you about these movie times? b. Find the range. What does this tell you about these movie times? c. How many standard ...Consider the ages (in years) and maintenance costs (in thousands of dollars per year) for five similar printing presses (Table 5.5.12). a. Calculate the average age of the presses. b. Calculate the standard deviation of the ...Post your question

0