1.(1 point) By 2040, at least 3.5 billion people will run short of water.Is this statement an example of descriptive or inferential statistics?

2.(1 point) Would rating books as poor, fair, good, or excellent be an example of nominal, ordinal, interval, or ratio-level measurement?

3.(1 point) Would the number of bananas in a bunch at the supermarket be a discrete or continuous variable?

4.(1 point) If a researcher stood at a busy intersection to see if the color of the automobile that a person drives is related to running red lights, would that be an observational or experimental study?

5.(5 points) The number of shark attacks and deaths over a recent 5-year period is shown.Find the mean, median, mode, midrange, and range for the data:

Attacks7164616557

Deaths14474

6.(6 points) Twelve batteries were tested to see how many hours they would last.The frequency distribution is shown below.Find the mean, modal class, variance, and standard deviation:

HoursFrequency

1 - 3 1

4 - 6 4

7 - 95

10 - 121

13 - 151

7.(3 points) If the average number of textbooks in professors' offices is 16, the standard deviation is 5, and the average age of the professors is 43, with a standard deviation of 8, which data set is more variable?

8.(6 points) The average earnings of year-round full-time workers 25 - 34 years old with a bachelor's degree or higher were $58,500 in 2003.If the standard deviation is $11,200, what can you say about the percentage of these workers who earn:

a.Between $47,300 and $69,700

b.More than $80,900

c.Less than $24,900

9.(3 points) Check the data set for outliers: 3, 7, 9, 6, 8, 10, 14, 16, 20, 121.(1 point) By 2040, at least 3.5 billion people will run short of water.Is this statement an example of descriptive or inferential statistics?

2.(1 point) Would rating books as poor, fair, good, or excellent be an example of nominal, ordinal, interval, or ratio-level measurement?

3.(1 point) Would the number of bananas in a bunch at the supermarket be a discrete or continuous variable?

4.(1 point) If a researcher stood at a busy intersection to see if the color of the automobile that a person drives is related to running red lights, would that be an observational or experimental study?

5.(5 points) The number of shark attacks and deaths over a recent 5-year period is shown.Find the mean, median, mode, midrange, and range for the data:

Attacks7164616557

Deaths14474

6.(6 points) Twelve batteries were tested to see how many hours they would last.The frequency distribution is shown below.Find the mean, modal class, variance, and standard deviation:

HoursFrequency

1 - 3 1

4 - 6 4

7 - 95

10 - 121

13 - 151

7.(3 points) If the average number of textbooks in professors' offices is 16, the standard deviation is 5, and the average age of the professors is 43, with a standard deviation of 8, which data set is more variable?

8.(6 points) The average earnings of year-round full-time workers 25 - 34 years old with a bachelor's degree or higher were $58,500 in 2003.If the standard deviation is $11,200, what can you say about the percentage of these workers who earn:

a.Between $47,300 and $69,700

b.More than $80,900

c.Less than $24,900

9.(3 points) Check the data set for outliers: 3, 7, 9, 6, 8, 10, 14, 16, 20, 12