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Question 6 10 pts A manager wants to know if the mean number of defective bulbs...
10) A set of data was collected involving the number of defective items found in a...
10) A set of data was collected involving the number of defective items found in a random sample of 46 cases of light bulbs produced during a morning shift at a plant. A manager wants to know if the mean number of defective bulbs per case is greater than 20 during the morning shift. She will make her decision using a test with a level of significance of 0.10. The following information was determined for the sample of 46 cases:...
Please answer the question in relation to Scenario 9-1 BUS-352 Quiz 5 9 10 11 12...
Please answer the question in relation to Scenario 9-1
BUS-352 Quiz 5 9 10 11 12 13 15 16 14 17 Refering to Scenario 9-1, the parameter the manger is interested in is: SCENARIO9-1 Microsoft Excel was used on a set of data involving the number of deféctive items found in a random sample of 46 cases of ligh know if the mean number of defect will make her decision using a test with a level of significance ofo 10...
The manager of the quality department for a tire manufacturing company wants to know the average...
The manager of the quality department for a tire manufacturing company wants to know the average tensile strength of rubber used in making a certain brand of radial tire. The population is normally distributed, and the population standard deviation is known. She uses a z test to test the null hypothesis that the mean tensile strength is 800 pounds per square inch. The calculated z test statistic is a positive value that leads to a p-value of .045 for the...
Question 3 A production manager wants to know if her new procedure results in fewer defective...
Question 3 A production manager wants to know if her new procedure results in fewer defective units. She knows that they are currently averaging 8% defective units. She then collects a sample of 341 units using the new procedure and finds 24 defective units. Do we have enough evidence to conclude that the new procedure results in fewer defective units? (use alpha .05) 1. Identify the appropriate test, alpha, and check assumptions 2. Formulate hypotheses 3. Perform calculations (test statistic...
Question (9) The manager of an assembly process wants to determine whether or not the number...
Question (9) The manager of an assembly process wants to determine whether or not the number of defective articles manufactured depends on the day of the week the articles are produced. She collected the following information. Is there sufficient evidence to reject the hypothesis that the number of defective articles is independent of the day of the week on which they are produced? Use α = 0.05. Day of Week M Tu W Th F Nondefective 85 87 93 86...
The manager of an assembly process wants to determine whether or not the number of defective...
The manager of an assembly process wants to determine whether or not the number of defective articles manufactured depends on the day of the week the articles are produced. She collected the following information. Is there sufficient evidence to reject the hypothesis that the number of defective articles is independent of the day of the week on which they are produced? Use α = 0.05. Day of Week M Tu W Th F Nondefective 92...
The manager of an assembly process wants to determine whether or not the number of defective...
The manager of an assembly process wants to determine whether or not the number of defective articles manufactured depends on the day of the week the articles are produced. She collected the following information. Is there sufficient evidence to reject the hypothesis that the number of defective articles is independent of the day of the week on which they are produced? Use α = 0.05. Day of Week M Tu W Th F Nondefective 87...
A manufacturer claims his light bulbs have a mean life of 1800 hours. A consumer group...
A manufacturer claims his light bulbs have a mean life of 1800 hours. A consumer group wants to test if their light bulbs do not last as long as the manufacturer claims. They tested a random sample of 270 bulbs and found them to have a sample mean life of 1790 hours and a sample standard deviation of 60 hours. Assess the manufacturer's claim. a) What is the null hypothesis? Correct: y = 1800 Incorrect x = 1800 Incorrect x...
The sales representative for a manufacturer of a new product claims that the product will increase...
The sales representative for a manufacturer of a new product claims that the product will increase output per machine by more than 29 units per hour. A line manager installs the product on 20 of the machines, and finds that the average increase was 31 with a standard deviation of 6.2. Using ? ; 05, is there evidence that the population mean increase in output is greater than 29 units per hour? Do a complete and appropriate hypothesis test. Step...
A professor in the Business department wants to know if there is a significant difference in...
A professor in the Business department wants to know if there is a significant difference in the performance on the first exam between two different classes. One class meets in the morning while the other meets at night. The results of this test are listed below along with an excel analysis conducted at the 5% significance level (α=0.05). t-Test: Two-Sample Assuming Equal Variances 8 am Class 7 pm Class Sample Mean 80.471 76.846 Sample Variance 97.51 162.14 Sample Observations 17...
Please answer the question in relation to Scenario 9-1
BUS-352 Quiz 5 9 10 11 12 13 15 16 14 17 Refering to Scenario 9-1, the parameter the manger is interested in is: SCENARIO9-1 Microsoft Excel was used on a set of data involving the number of deféctive items found in a random sample of 46 cases of ligh know if the mean number of defect will make her decision using a test with a level of significance ofo 10...
Question 3 A production manager wants to know if her new procedure results in fewer defective units. She knows that they are currently averaging 8% defective units. She then collects a sample of 341 units using the new procedure and finds 24 defective units. Do we have enough evidence to conclude that the new procedure results in fewer defective units? (use alpha .05) 1. Identify the appropriate test, alpha, and check assumptions 2. Formulate hypotheses 3. Perform calculations (test statistic...
A manufacturer claims his light bulbs have a mean life of 1800 hours. A consumer group wants to test if their light bulbs do not last as long as the manufacturer claims. They tested a random sample of 270 bulbs and found them to have a sample mean life of 1790 hours and a sample standard deviation of 60 hours. Assess the manufacturer's claim. a) What is the null hypothesis? Correct: y = 1800 Incorrect x = 1800 Incorrect x...
The sales representative for a manufacturer of a new product claims that the product will increase output per machine by more than 29 units per hour. A line manager installs the product on 20 of the machines, and finds that the average increase was 31 with a standard deviation of 6.2. Using ? ; 05, is there evidence that the population mean increase in output is greater than 29 units per hour? Do a complete and appropriate hypothesis test. Step...
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