# Question 1 of 7 Question 1 The distribution of the

Question 1 of 7

Question 1

The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a mean of \$235 and a standard deviation of \$20.

According to the Standard Deviation Rule, in a semester, almost all (99.7%) of the students spent on textbooks:

between 215 and 255 dollars.

between 195 and 275 dollars.

between 175 and 295 dollars.

less than 215 dollars or more than 255 dollars.

above 235 dollars.

Question 2 of 7

Question 2

The histogram below displays the distribution of 50 ages at death due to trauma (unnatural accidents and homicides) that were observed in a certain hospital during a week.

To describe the center and spread of the above distribution, the appropriate numerical measures are:

the IQR and the standard deviation

the median and the IQR

the mean and the median

the mean and the standard deviation

Any of the above would be appropriate, it is just a matter of taste.

Question 3 of 7

Question 3

A student survey was conducted in a major university, where data were collected from a random sample of 750 undergraduate students. One variable that was recorded for each student was the student’s answer to the question: What region of the country did you live in just prior to enrolling in this university? Northeast/Southeast/Northwest/Southwest/Midwest/Outside the U.S.

These data would be best displayed using which of the following?

histogram

IQR

boxplot

stemplot

pie chart

The next 4 questions relate to the same boxplot graph, shown below.

Question 4 of 7

Question 4

The boxplots below show the real estate values of single family homes in 2 neighboring cities (in thousands of dollars).

Which city has more homes?

Tinytown

Bigburg

Both cities have the same number of households.

It is impossible to tell from the boxplots.

Question 5 of 7

Question 5

Here again are the boxplots showing the real estate values of single family homes in 2 neighboring cities (in thousands of dollars).

Which city has greater variability in real estate values?

Tinytown

Bigburg

Both cities have the same variability in real estate values.

It is impossible to tell from the boxplots.

Question 6 of 7

Question 6

Here again are the boxplots showing the real estate values of single family homes in 2 neighboring cities (in thousands of dollars).

Which city has the greater percentage of homes with real estate values above \$150,000?

Tinytown

Bigburg

Both cities have the same percentage of homes with real estate values above \$150,000.

It is impossible to tell from the boxplots.

Question 7 of 7

Question 7

Here again are the boxplots showing the real estate values of single family homes in 2 neighboring cities (in thousands of dollars).

Which city has a greater percentage of homes with real estate values between \$60,000 and \$150,000?

Tinytown

Bigburg

Both cities have the same percentage of homes with real estate values between \$60,000 and \$150,000.

It is impossible to tell from the boxplots

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