Exam 30: Selected Topics in Decision Making

Three brands of AAA batteries are compared to determine if differences in Lifetime exist. Each brand is tested in four devices (TV remote, hand-held game, Flashlight and digital camera). The experiment is run once for each combination of brand And device. The twelve runs are ordered randomly. The time (in minutes) that each Battery lasts under continuous usage is recorded. Which of the following statements is True about this design?

A major customer for a vendor of plastic containers requires that its containers Have a volume of 10,000 cubic inches with a tolerance of 50 cubic inches. To ensure that Its process is under control and meeting its major customer's specifications, the vendor Uses control charting. Forty subgroups of five containers each were selected periodically From the production process. The average of the means across all subgroups was found To be 10,012 cubic inches and the average range was 48 cubic inches. What is the Cp Index?

The nonparametric alternative to the two sample t-test is the

Suppose that six different e-readers were evaluated by two senior citizen Consumer groups with respect to their suitability for use among the older segment of the Population. The rankings from 1 (best) to 6 (worst) are shown below. What Nonparametric method should be used to determine the association between these Rankings? Model Group 1 Group 2 Kindle 3 1 1 Sony Reader 2 3 Kindle DX 3 2 Alex 4 6 Kobo eReader 5 4 COOL-ER 6 5

Three brands of AAA batteries are compared to determine if differences in Lifetime exist. Each brand is tested in four devices (TV remote, hand-held game, Flashlight and digital camera). The experiment is run once for each combination of brand And device. The twelve runs are ordered randomly. The time (in minutes) that each Battery lasts under continuous usage is recorded. Suppose the P-value associated with the F-statistic for testing whether brand affects battery lifetime is 0.128. Based on this we Can conclude that

In an effort to reduce the number of data entry errors on its order forms, a Company would like to initiate control charting. They begin by counting and recording The number of data entry errors made on the first order form completed each day for a Month. An appropriate control chart to use for these data is the

ASQ (American Society for Quality) routinely conducts a "salary survey" of Quality professionals. Suppose it is interested in determining if the industries within Which quality professionals work affect their salaries. They have salary data from Random samples taken in three different industries: (1 = Consumer Goods, 2 = Financial, 3 = Health Care). Based on the partial ANOVA results shown below, the F statistic value Is One-way ANOVA: Salary versus Industry Source DF SS MS F P Industry 2 23343 11671 Error 27 16589 614 Total 29 39932

Suppose that six different e-readers were evaluated by two senior citizen groups With respect to their suitability for use among the older segment of the population. The Rankings from 1 (best) to 6 (worst) are shown below. Using the appropriate Nonparametric method, the value of the calculated test statistic to determine if there is a Difference in the rankings between the two magazines is Model Group 1 Group 2 Kindle 3 1 1 Sony Reader 2 3 Kindle DX 3 2 Alex 4 6 Kobo eReader 5 4 COOL-ER 6 5

Three wines (California, Australian and Italian) were tasted by judges as part of An annual food and wine festival. The judges graded the wines on overall quality (A = Excellent to F = poor). Each wine was graded by a different group of judges (the data are Shown below). Are there differences in the perceived quality among the three wines? The calculated value of the statistic for the appropriate nonparametric test is California Australian Italian A- B- - - A- + - C + B -

Three wines (California, Australian and Italian) were tasted by judges as part of An annual food and wine festival. The judges graded the wines on overall quality (A = Excellent to F = poor). Each wine was graded by a different group of judges (the data are Shown below). Are there differences in the perceived quality among the three wines? The appropriate nonparametric procedure to use is the California Australian Italian + + + - - - - + - - + - -

Sunny Side Condominiums recently purchased land outside of Phoenix and is Trying to decide the size complex it should build (large or small). The following payoff Table (in thousands of dollars) considers three possible levels of demand. If there is a 45% chance that the demand level will be low, 30% that it will be medium and 25% Chance that it will be high, what is the expected value of perfect information?

Suppose that six different e-readers were evaluated by two senior citizen groups With respect to their suitability for use among the older segment of the population. The Rankings from 1 (best) to 6 (worst) are shown below. To determine if there is a difference In the rankings between the two magazines, the appropriate nonparametric method is the Model Group 1 Group 2 Kindle 3 1 1 Sony Reader 2 3 Kindle DX 3 2 Alex 4 6 Kobo eReader 5 4 COOL-ER 6 5

Consider a process that manufactures copper wire. To initiate control charting, Twenty-five samples of size five are periodically taken and the resistance (in ohms) of Each wire is measured. An appropriate control chart to use for these data is the

A major customer for a vendor of plastic containers requires that its containers Have a volume of 10,000 cubic inches with a tolerance of 50 cubic inches. To ensure that Its process is under control and meeting its major customer's specifications, the vendor Uses control charting. Forty subgroups of five containers each were selected periodically From the production process. The average of the means across all subgroups was found To be 10,012 cubic inches and the average range was 48 cubic inches. The lower and Upper control limits for the X-bar chart are

Three brands of AAA batteries are compared to determine if differences in Lifetime exist. Each brand is tested in four devices (TV remote, hand-held game, Flashlight and digital camera). The experiment is run once for each combination of brand And device. The twelve runs are ordered randomly. The time (in minutes) that each Battery lasts under continuous usage is recorded. Based on the partial ANOVA results Shown below, the F-statistic for testing whether the three brands of AAA batteries have Equal mean lifetimes is Two-way ANOVA: Time (min) versus Brand, Device Source DF SS MS F P Brand 2 2974 1487 Device 3 2496533 832178 Error 6 3017 503 Total 11 2502524

Sunny Side Condominiums recently purchased land outside of Phoenix and is Trying to decide the size complex it should build (large or small). The following payoff Table (in thousands of dollars) considers three possible levels of demand. Using the Maximax approach, Sunny Side should

A major customer for a vendor of plastic containers requires that its containers Have a volume of 10,000 cubic inches with a tolerance of 50 cubic inches. To ensure that Its process is under control and meeting its major customer's specifications, the vendor Uses control charting. Forty subgroups of five containers each were selected periodically From the production process. The average of the means across all subgroups was found To be 10,012 cubic inches and the average range was 48 cubic inches. The lower and Upper control limits for the R chart are

Sunny Side Condominiums recently purchased land outside of Phoenix and is Trying to decide the size complex it should build (large or small). The following payoff Table (in thousands of dollars) considers three possible levels of demand. If there is a 45% chance that the demand level will be low, 30% that it will be medium and 25% Chance that it will be high, the expected value (in thousands of dollars) associated with The best action is

Disparate databases that include demographic and transactional variables merged Together are referred to as

A major customer for a vendor of plastic containers requires that its containers Have a volume of 10,000 cubic inches with a tolerance of 50 cubic inches. To ensure that Its process is under control and meeting its major customer's specifications, the vendor Uses control charting. Forty subgroups of five containers each were selected periodically From the production process. The average of the means across all subgroups was found To be 10,012 cubic inches and the average range was 48 cubic inches. The estimated Process standard deviation ( $( \hat { \sigma } )$ ) is