The population which is being invested by NPD.

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Answer 1

Question

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

Chapter 6.6, Problem 6.90ACI

(a)

To determine

To find: The population which is being invested by NPD.

(b)

To determine

To check: Whether the population correction factor is necessary to use when constructing confidence interval to estimate the proportion of households that are very similar with La-Z-Boy brand or not.

(c)

To determine

To find: The estimate of the standard error of p^ should be used for constructing the confidence interval of part (b).

(d)

To determine

To construct and interpret: The 90% confidence interval for true proportion.

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Table 5: Measurement Data for Question 9 Part Number Op-1, M-1 Op-1, M-2 | Op-2, M-1 Op-2, M-2 | Op-3, M-1 Op-3, M-2 1 21 20 20 20 19 21 2 24 23 24 24 23 24 3 4 5 6 7 8 9 10 11 21 12 8222332 201 21 20 22 20 22 27 27 28 26 27 28 19 18 19 21 24 21 22 19 17 18 24 23 25 25 23 26 20 20 18 19 17 13 23 25 25 2 3 3 3 3 2 3 18 18 21 21 23 22 24 22 20 19 23 24 25 24 20 21 19 18 25 25 14 24 24 23 25 24 15 29 30 30 28 31 16 26 26 25 26 25 17 20 20 19 20 20 843882388 20 18 25 20 19 25 25 30 27 20 18 19 21 19 19 21 23 19 25 26 25 24 25 25 20 19 19 18 17 19 17 Question 9 A measurement systems experiment involving 20 parts, three operators (Op-1, Op-2, Op-3), and two measure- ments (M-1, M-2) per part is shown in Table 5. (a) Estimate the repeatability and reproducibility of the gauge. (b) What is the estimate of total gauge variability?" (c) If the product specifications are at LSL = 6 and USL 60, what can you say about gauge capability?

Question 5 A fraction nonconforming control chart with center line 0.10, UCL = 0.19, and LCL = 0.01 is used to control a process. (a) If three-sigma limits are used, find the sample size for the control charte 2 (b) Use the Poisson approximation to the binomial to find the probability of type I error. (c) Use the Poisson approximation to the binomial to find the probability of type II error if the process fraction defective is actually p = 0.20.

Question 8 Ten parts are measured three times by the same operator in a gauge capability study. The data are shown in Table 4. (a) Describe the measurement error that results from the use of this gauge. I (b) Estimate total variability and product variability. (c) What percentage of total variability is due to the gauge? (d) If specifications on the part are at 100±15, find the P/T ratio for this gauge. Comment on the adequacy of the gauge. 3 Table 4: Measurement Data for Question 8 Part Number Measurement 1 Measurement 2 Measurement 3 1 2 100 95 101 100 93 97 3 101 103 100 4 96 95 97 5 98 98 96 6 99 98 98 7889 95 97 98 100 99 98 100 100 97 10 100 98 98 99

Answer 2

Question

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

Chapter 6.6, Problem 6.90ACI

(a)

To determine

To find: The population which is being invested by NPD.

(b)

To determine

To check: Whether the population correction factor is necessary to use when constructing confidence interval to estimate the proportion of households that are very similar with La-Z-Boy brand or not.

(c)

To determine

To find: The estimate of the standard error of p^ should be used for constructing the confidence interval of part (b).

(d)

To determine

To construct and interpret: The 90% confidence interval for true proportion.

Expert Solution & Answer

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Check out a sample textbook solution

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Answer 3

Question

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

Chapter 6.6, Problem 6.90ACI

(a)

To determine

To find: The population which is being invested by NPD.

(b)

To determine

To check: Whether the population correction factor is necessary to use when constructing confidence interval to estimate the proportion of households that are very similar with La-Z-Boy brand or not.

(c)

To determine

To find: The estimate of the standard error of p^ should be used for constructing the confidence interval of part (b).

(d)

To determine

To construct and interpret: The 90% confidence interval for true proportion.

Expert Solution & Answer

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Check out a sample textbook solution

See solution

Answer 4

Question

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

Chapter 6.6, Problem 6.90ACI

(a)

To determine

To find: The population which is being invested by NPD.

(b)

To determine

To check: Whether the population correction factor is necessary to use when constructing confidence interval to estimate the proportion of households that are very similar with La-Z-Boy brand or not.

(c)

To determine

To find: The estimate of the standard error of p^ should be used for constructing the confidence interval of part (b).

(d)

To determine

To construct and interpret: The 90% confidence interval for true proportion.

Expert Solution & Answer

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Answer 5

Chapter 6.6, Problem 6.90ACI

(a)

To determine

To find: The population which is being invested by NPD.

(b)

To determine

To check: Whether the population correction factor is necessary to use when constructing confidence interval to estimate the proportion of households that are very similar with La-Z-Boy brand or not.

(c)

To determine

To find: The estimate of the standard error of p^ should be used for constructing the confidence interval of part (b).

(d)

To determine

To construct and interpret: The 90% confidence interval for true proportion.

Answer 6

Chapter 6.6, Problem 6.90ACI

(a)

To determine

To find: The population which is being invested by NPD.

Answer 7

Chapter 6.6, Problem 6.90ACI

(a)

To determine

To find: The population which is being invested by NPD.

Answer 8

(b)

To determine

To check: Whether the population correction factor is necessary to use when constructing confidence interval to estimate the proportion of households that are very similar with La-Z-Boy brand or not.

Answer 9

(b)

To determine

To check: Whether the population correction factor is necessary to use when constructing confidence interval to estimate the proportion of households that are very similar with La-Z-Boy brand or not.

Answer 10

(c)

To determine

To find: The estimate of the standard error of p^ should be used for constructing the confidence interval of part (b).

Answer 11

(c)

To determine

To find: The estimate of the standard error of p^ should be used for constructing the confidence interval of part (b).

Answer 12

(d)

To determine

To construct and interpret: The 90% confidence interval for true proportion.

Answer 13

(d)

To determine

To construct and interpret: The 90% confidence interval for true proportion.

Answer 14

Expert Solution & Answer

Answer 15

Expert Solution & Answer

Answer 16

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Answer 17

Ch. 6.2 - Find z/2 for each of the following: a. a . = .10...Ch. 6.2 - What is the confidence level of each of the...Ch. 6.2 - A random sample of n measurements was selected...Ch. 6.2 - A random sample of 90 observations produced a mean...Ch. 6.2 - A random sample of 70 observations from a normally...Ch. 6.2 - Use the applet Confidence Intervals for a Mean...Ch. 6.2 - Use the applet Confidence Intervals for a Mean...Ch. 6.2 - Prob. 6.6LM Ch. 6.2 - Explain the difference between an interval...Ch. 6.2 - Prob. 6.8LM

The population which is being invested by NPD.

Solution Summary: The author explains that the population correction factor is necessary to estimate the proportion of households that are very similar with La-Z-Boy brand.

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To find: The population which is being invested by NPD.

To check: Whether the population correction factor is necessary to use when constructing confidence interval to estimate the proportion of households that are very similar with La-Z-Boy brand or not.

To find: The estimate of the standard error of p^ should be used for constructing the confidence interval of part (b).

To construct and interpret: The 90% confidence interval for true proportion.

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Chapter 6 Solutions