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

Column A	Column B
apprehensive	a. overcome with amazement
	b. very beautiful
	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

The wall thickness of 25 glass 2-liter bottles was measured by a quality-control engineer. The sample mean was $\overline{x}=4.05$ millimeters, and the sample standard deviation was $s = 0.08$ millimeter. Find a 95% lower confidence bound for mean wall thickness. Interpret the interval obtained.

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

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

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.

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.

Give the word derived from Greek elements that matches given of the following. It is not necessary to give combining terms for word in parentheses. Verify your answer in a medical dictionary. Note that the wording of the dictionary definition may vary from the wording below.
Heavy, thick quality of the voice _______________

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?

At a sporting goods factory, a quality control technician checking the weights of baseball bats measures a bat that should weigh 26 oz at 26 1/4 oz. If a bat is not within 0.6% of its specified weight, it is rejected. Why does this bat pass or fail this test?

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

A quality control chart has been maintained for a measurable characteristic of items taken from a conveyor belt at a fixed point in a production line. The measurements obtained today, in order of time, are as follows:

$$\left. \begin{array} { l l l l l l l l l } { 68.2 } & { 71.6 } & { 69.3 } & { 71.6 } & { 70.4 } & { 65.0 } & { 63.6 } & { 64.7 } \\ { 65.3 } & { 64.2 } & { 67.6 } & { 68.6 } & { 66.8 } & { 68.9 } & { 66.8 } & { 70.1 } \end{array} \right.$$

Divide the time period into two equal parts and compare the means, using Student’s t test. Do the data provide evidence of a shift in the mean level of the quality characteristics? Explain.

The calculation of r gives additional information that helps to describe the data. This data set shows price (in dollars) and quality ratings for 12 different brands of bike helmets. The quality rating is a number from 0 (worst) to 100 (best) that measures various factors such as how well the helmet absorbed the force of an impact, the strength and ventilation of the helmet, and its ease of use. Bicycle Helmets.

$$\begin{matrix} \text{Price (dollars)} & \text{35} & \text{20} & \text{30} & \text{40} & \text{50} & \text{23} & \text{30} & \text{18} & \text{40} & \text{28} & \text{20} & \text{25}\\ \text{Quality Rating} & \text{65} & \text{61} & \text{60} & \text{55} & \text{54} & \text{47} & \text{47} & \text{43} & \text{42} & \text{41} & \text{40} & \text{32}\\ \end{matrix}$$

How would you interpret the value of the correlation coefficient in the context of this problem?

A manufacturer of compact discs will not sell a batch of discs if 3% or more of the discs in the batch are defective. A quality control inspector finds 2 defective discs in a sample of 50 discs. The sample was randomly chosen from a lot of 1000 discs. Will the manufacturer sell this batch? Explain.