In a bottle-filling process, the amount of drink injected into $16 \mathrm{oz}$ bottles is normally distributed with a mean of $16 \mathrm{oz}$ and a standard deviation of $.02 \mathrm{oz}$. Bottles containing less than $15.95 \mathrm{oz}$ do not meet the bottler's quality standard. What percentage of filled bottles do not meet the standard?

A 0.5-m^3 rigid tank contains refrigerant-134a initially at 200 kPa and 40 percent quality. Heat is transferred now to the refrigerant from a source at 35$^\circ{}$C until the pressure rises to 400 kPa. Determine (a) the entropy change of the refrigerant, (b) the entropy change of the heat source, and (c) the total entropy change for this process.

An important quality characteristic of water is the concentration of suspended solid material in mg/l. Twelve measurements on suspended solids from a certain lake are as follows: 42.4, 65.7, 29.8, 58.7, 52.1, 55.8, 57.0, 68.7, 67.3, 67.3, 54.3, and 54.0. Calculate the sample average and sample standard deviation. Construct a dot diagram of the data.

A steam power plant operating in an ideal Rankine cycle has a high pressure of $5\ \mathrm{MPa}$ and a low pressure of $15\ \mathrm{kPa}$. The turbine exhaust state should have a quality of at least $95 \%$, and the turbine power generated should be $7.5\ \mathrm{MW}$. Find the necessary boiler exit temperature and the total mass flow rate.

A company packaging snack foods maintains quality control by randomly choosing 10 cases from each day's production and weighing the bags. Then they open one bag from each case and inspect the contents.

Identify the next items (if feasible). If you can't describe, then say so-this often happens when we read about a survey.

d) The sample

The production of wine is a multibillion-dollar worldwide industry. In an attempt to develop a model of wine quality as judged by wine experts, data was collected from red wine variants of Portuguese “Vinho Verde” wine. A sample of 50 wines is stored in VinhoVerde . Develop a multiple linear regression model to predict wine quality, measured on a scale from 0 (very bad) to 10 (excellent) based on alcohol content (%) and the amount of chlorides. a. Plot the residuals versus $\hat{Y}_i$

b. Plot the residuals versus $X_{1 j}$.

c. Plot the residuals versus $X_{2 i}$.

d. In the residual plots created in (a) through (c), is there any evidence of a violation of the regression assumptions? Explain.

e. Should you compute the Durbin-Watson statistic for these data? Explain .

Match each lean business method to the best description:

D. Lean Six Sigma

i. The focus is on quality throughout the entire process. ii. Inventory is attained or produced only as needed. iii. A combined effort of team members is used to eliminate waste and defects. iv. All managers and employees are always looking for ways to improve operations.

An adiabatic capillary tube is used in some refrigera- tion systems to drop the pressure of the refrigerant from the condenser level to the evaporator level. The $\mathrm{R}-134\mathrm{a}$ enters the capillary tube as a saturated liquid at $50^{\circ} \mathrm{C}$, and leaves at $-12^{\circ} \mathrm{C}$. Determine the quality of the refrigerant at the inlet of the evaporator.

Superheated water vapor at 180 psia and 500$^\circ{}$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 the saturation lines. Answers: (a) 29.84 psia, (b) 0.219, (c) 426 Btu/lbm

A quality-control engineer wants to estimate the fraction of defectives in a large lot of printer ink cartridges. From previous experience, he feels that the actual fraction of defectives should be somewhere around .05. How large a sample should he take if he wants to estimate the true fraction to within .01, using a 95% confidence interval?

Match the terms with the definitions . Some terms may not be used.

a. bait and switch

b. clearance

c. deception

d. fake sale

e. infomercial

f. liquidation

g. low-balling

h. pigeon drop

i. Ponzi scheme

j. pyramid scheme

k. redress

__ Making false or misleading claims about quality, price, or purpose of a product

A closed system consists of a two-phase liquid-vapor mixture of $\mathrm{H}_2 \mathrm{O}$ in equilibrium at $300^{\circ} \mathrm{F}$. The quality of the mixture is $0.8(80 \%)$ and the mass of saturated vapor present is $2\ \mathrm{lb}$. Determine the mass of saturated liquid present. in $\mathrm{Ib}$, and the total volume of the system, in $\mathrm{ft}^3$.

Determine the quality of a two-phase liquid-vapor mixture of (a) $\mathrm{H}_2 \mathrm{O}$ at $100^{\circ} \mathrm{C}$ with a specific volume of $0.8 \mathrm{~m}^3 / \mathrm{kg}$. (b) Refrigerant $134 \mathrm{a}$ at $0^{\circ} \mathrm{C}$ with a specific volume of $0.7721$ $\mathrm{cm}^3 / \mathrm{g}$. 4.6 Determine the quality of a two-phase liquid-vapor mixture of (a) $\mathrm{H}_2 \mathrm{O}$ at $100 \mathrm{lbf} / \mathrm{in}^2{ }^2$ with a specific volume of $3.0 \mathrm{ft}^3 / \mathrm{lb}$. (b) Refrigerant $134 \mathrm{a}$ at $-40^{\circ} \mathrm{F}$ with a specific volume of $5.7173 \mathrm{ft}^3 / \mathrm{lb}$. 4.7 Ten kg of a two-phase, liquid-vapor mixture of methane $\left(\mathrm{CH}_4\right)$ exists at $160 \mathrm{~K}$ in a $0.3 \mathrm{~m}^3$ tank. Determine the quality of the mixture, if the values of specific volume for saturated liquid and saturated vapor methane at $160 \mathrm{~K}$ are $v_{\mathrm{f}}=2.97 \times$ $10^{-3} \mathrm{~m}^3 / \mathrm{kg}$ and $v_{\mathrm{g}}=3.94 \times 10^{-2} \mathrm{~m}^3 / \mathrm{kg}$, respectively.

A steam power plant operating in an ideal Rankine cycle has a high pressure of 5 War and a low pressure of 15 kPa. The turbine exhaust state should have a quality of at least 95%, and the turbine power generated should be 7.5 MW. Find the necessary boiler exit temperature and the total mass flow rate.