# Question

According to the U.S. Census Bureau, the mean of the commute time to work for a resident of Boston, Massachusetts's 27.3 minutes. Assume that the standard deviation of the commute time is 8.1 minutes to answer the following:

(a) What minimum percentage of commuters in Boston has a commute time within 2 standard deviations of the mean?

(b) What minimum percentage of commuters in Boston has a commute time within 1.5 standard deviations of the mean? What are the commute times within 1.5 standard deviations of the mean?

(c) What is the minimum percentage of commuters who have commute times between 3 minutes and 51.6 minutes?

(a) What minimum percentage of commuters in Boston has a commute time within 2 standard deviations of the mean?

(b) What minimum percentage of commuters in Boston has a commute time within 1.5 standard deviations of the mean? What are the commute times within 1.5 standard deviations of the mean?

(c) What is the minimum percentage of commuters who have commute times between 3 minutes and 51.6 minutes?

## Answer to relevant Questions

The standard deviation of batting averages of all teams in the American League is 0.008. The standard deviation of all players in the American League is 0.02154. Why is there less variability in team batting averages? A popular theory in investment states that you should invest a certain amount of money in foreign investments to reduce your risk. The risk of a portfolio is defined as the standard deviation of the rate of return. Refer to ...The following frequency distribution represents the birth weight of all babies born in the United States in 2004. Approximate the mean and standard deviation birth weight. Weight (grams) .... Number of Babies ...Marissa has just completed her second semester in college. She earned a B in her 5-hour calculus course, an A in her 3-hour social work course, an A in her 4-hour biology course, and a C in her 3-hour American literature ...Approximate the median of the frequency distribution in Problem 4. Age ..... Frequency 0-17 ...... 15,451 18–24 ..... 6071 25–34 .... 6123 35–44 .... 4756 45–54 .... 4421 55–59 ..... 1792 60-64 ...Post your question

0