Questions from Applied Statistics

Q: On Friday night, the owner of Chez Pierre in downtown Chicago

On Friday night, the owner of Chez Pierre in downtown Chicago noted the amount spent for dinner at 28 four-person tables. (a) Find the mean, midrange, geometric mean, and 10 percent trimmed mean. (b)...

Q: The weight of a small Starbucks coffee is a normally distributed random

The weight of a small Starbucks coffee is a normally distributed random variable with a mean of 360 grams and a standard deviation of 9 grams. Find the weight that corresponds to each event. Show your...

Q: An executive’s telephone log showed the lengths of 65 calls initiated during

An executive’s telephone log showed the lengths of 65 calls initiated during the last week of July. (a) Find the mean, median, mode, midrange, geometric mean, and 10 percent trimmed...

Q: The number of Internet users in Latin America grew from 78.

The number of Internet users in Latin America grew from 78.5 million in 2000 to 156.6 million in 2010. Use the geometric mean to find the annual growth rate.

Q: Your laptop gets warm (even hot) when you place it

Your laptop gets warm (even hot) when you place it on your lap because it is dissipating heat from its microprocessor and related components. (a) Use the information in the following table to make a s...

Q: In fuel economy tests in city driving conditions, a hybrid vehicle’s

In fuel economy tests in city driving conditions, a hybrid vehicle’s mean was 43.2 mpg with a standard deviation of 2.2 mpg. A comparably sized gasoline vehicle’s mean was 27.2 mpg with a standard dev...

Q: (a) Make a scatter plot of the following data on

(a) Make a scatter plot of the following data on X 5 home size and Y 5 selling price (thousands of dollars) for new homes (n 5 20) in a suburb of an eastern city. (b) Find the sample correlation coeff...

Q: Over the past month, Bob’s bowling score mean was 182 with

Over the past month, Bob’s bowling score mean was 182 with a standard deviation of 9.1. His bowling partner Cedric’s mean was 152 with a standard deviation of 7.6. Which bowler is more consistent in r...

Q: Use Excel’s AVEDEV function to find the mean absolute deviation (MAD

Use Excel’s AVEDEV function to find the mean absolute deviation (MAD) of the integers 1 through 10.

Q: Use Excel’s AVEDEV function to find the mean absolute deviation (MAD

Use Excel’s AVEDEV function to find the mean absolute deviation (MAD) of these five numbers: 12, 18, 21, 22, 27.