The Anorexia data file on the book's website shows weight change for anorexic teenage girls who were randomly assigned to one of three psychological treatments (cognitive or family therapy and a control treatment). Use software to analyze these data. (The change scores are in the last three columns of the data set. Alternatively, the website also contains a data set that shows the data in "long" format, with the treatment in one column and the change score in another column.)

State and check the assumptions for the test in part b.

Find the saturation current and cutoff voltage if the collector resistor is $2 \mathrm{k} \Omega$ and $V_{C C}$ is $12 \mathrm{~V}$.

Find the mean, median, mode, and range of each data set. 75, 63, 89, 91

Find the interquartile range of the following set of data: 3, 4, 5, 5, 6, 8,11,13

Write the pronouns and identify them as personal, intensive, possessive, relative, demonstrative, indefinite, or interrogative.

Many of the couples getting married these days uphold the customs and superstitions that have been preserved from the past.

Five numbers are in the data set $\{16,4,6,2,x\}$. The mean and the median are the same number. What are the possible values of $x$?

Give the percentage of measurements in a data set that are above and below each of the following percentiles: 75th percentile.

Complete the sentences using the preview words. A set of data that is made up of two paired variables is _.

Isabel Briggs Myers was a pioneer in the study of personality types. The personality types are broadly defined according to four main preferences. Do married couples choose similar or different personality types in their mates? The following data give an indication.

$$\scriptscriptstyle\begin{array}{l}\text{Similarities and Differences in a Random Sample of 375 Married Couples}\end{array} \\ \scriptscriptstyle\begin{array}{lc} \hline \text{Number of Similar Preferences} & \text{Number of Married Couples} \\ \hline \text{All four} & 34 \\ \text{Three} & 131 \\ \text{Two} & 124 \\ \text{One} & 71 \\ \text{None} & 15 \\ \hline \end{array}$$

Suppose that a married couple is selected at random. Use the data to estimate the probability that they will have 0, 1, 2, 3, or 4 personality preferences in common.

Eight couples attend a benefit dinner at which two prizes are given. In how many ways can two names be randomly drawn so that the prizes are not awarded to the same couple?

Four couples have reserved seats in a given row for a concert. In how many different ways can they be seated if

(a) there are no seating restrictions?

(b) the two members of each couple wish to sit together?

A data set consists of the numbers x of people at Beach 1 and the numbers y of people at Beach 2 recorded daily for 1 week. Sketch a possible graph of the data set. Describe the situation shown in the graph and give a possible correlation coefficient. Determine whether there is a casual relationship. Explain.

The device in earlier problem is badly designed because of the couples that must be supported by the bearing at $B$, which would cause the bearing to "bind." (Imagine trying to open a door supported by only one hinge.) In this improved design, the bearings at $B$ and $C$ support no couples, and the bearing at $C$ does not exert a force in the $x$ direction. If the force $\mathbf{F}=10 \mathbf{i}-30 \mathbf{j}-$ $10 \mathrm{k}\ (\mathrm{N})$, what are the tension in the vertical cable and the reactions at the bearings $B$ and $C$ ?

Decide whether the following statement is true or false:
Following the birth of a baby, couples today pretty much share household and child care responsibilities equally.

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