Match the definition in Column B with the word in Column A.

Column A	Column B
	a. overcome with amazement
	b. very beautiful
cower	c. lower in rank or quality
	d. to blame
	e. to hide in fear
	f. to bring together
	g. something that discourages
	h. fearful or uneasy
	i. disfigurement
	j. to damage

Two pounds mass of Refrigerant $134 a$, initially the pressure $p_1=$ $180 \mathrm{lbf} / \mathrm{in}^2{ }^2$ and temperature $T_1=120^{\circ} \mathrm{F}$, undergo a constant-pressure process to a final state where the quality is $76.5 \%$. Find the work for the process, in Btu.

A rigid 10-L vessel initially contains a mixture of liquid water and vapor at 100$^\circ{}$C with 12.3 percent quality. The mixture is then heated until its temperature is 180$^\circ{}$C. Calculate the heat transfer required for this process. Answer: 92.5 kJ

The American Society for Quality (ASQ) conducted a salary survey of all its members. ASQ members work in all areas of manufacturing and service-related institutions, with a common theme of an interest in quality. Two job titles are black belt and green belt. (See Section 19.6 for a description of these titles in a Six Sigma quality improvement initiative.) Descriptive statistics concerning salaries for these two job titles are given in the following table:

$$\begin{array}{cccc} Job Title & Sample Size & Mean & \begin{gathered}\text { Standard } \\ \text { Deviation }\end{gathered} \\ \hline Black belt & 109 & 98,445 & 24,120 \\ Green belt & 39 & 79,749 & 28,086 \end{array}$$

a. Using a 0.05 level of significance, is there a difference in the variability of salaries between black belts and green belts?

b. Based on the result of (a), which t test defined in Section 10.1 is appropriate for comparing mean salaries?

c. Using a 0.05 level of significance, is the mean salary of black belts greater than the mean salary of green belts?

Match the definition in Column B with the word in Column A.

Match the definition in Column B with the word in Column A.

In the following exercise, classify each problem according to whether it involves a permutation or a combination.

As part of a quality-control program, 3 cell phones are selected at random for testing from 100 cell phones produced by the manufacturer. In how many ways can this test batch be chosen?

A quality control standard requires that no more than $5$ percent of bags of Halloween candy be underweight. A random sample of $200$ bags showed that $16$ were underweight. (a) At $\alpha=.025$, is the standard being violated? Use a right-tailed test and show your work. (b) Find the p-value.

Match the definition in Column B with the word in Column A.

The article “Quality of the Fire Clay Coal Bed, Southeastern Kentucky” (J. Hower, W. Andrews, et al., Journal of Coal Quality, 1994:13-26) contains measurements on samples of coal from several counties in Kentucky. In units of percent ash, five samples from Knott County had an average aluminum dioxide $\left(\mathrm{AlO}_{2}\right)$ content of 32.17 and a standard deviation of 2.23. Six samples from Leslie County had an average $\mathrm{AlO}_{2}$ content of 26.48 and a standard deviation of 2.02. Find a 98% confidence interval for the difference in $\mathrm{AlO}_{2}$ content between coal samples from the two counties.

Tuan decides to buy a high-quality silk-screen and long-lasting inks, making his starting cost for printing shirts to $\$130$. The cos to of the shirts and his selling price remain the same. How many shirts does Tuan need to sell to make a profit?

On Tuesday, the bottles of Arizona Iced Tea a filled in a plant were supposed to contain an average of 20 ounces of iced tea. Quality control inspectors selected 50 bottles at random from the day's production. These bottles contained an average of 19.6 ounces of iced tea.

Superheated water vapor at 180 psia and $500^{\circ} \mathrm{F}$ is allowed to cool at constant volume until the temperature drops to $250^\circ F.$ At the final state, determine (a) the pressure, (b) the quality, and (c) the enthalpy. Also, show the process on a T-v diagram with respect to saturation lines.

Check whether each of the conditions is met for calculating a confidence interval for the population proportion p. A quality control inspector takes a random sample of 25 bags of potato chips from the thousands of bags filled in an hour. Of the bags selected, 3 had too much salt.