Twenty pilots were tested in a flight simulator, and thetime for each to complete a certain corrective action wasmeasured in seconds, with the following results:5.2 5.6 7.6 6.8 4.8 5.7 9.0 6.0 4.9 7.46.5 7.9 6.8 4.3 8.5 3.6 6.1 5.8 6.4 4.0 Use a computer program to find a 95% confidence inter-val for the mean time to take corrective action.

Twenty pilots were tested in a flight simulator, and thetime for each to complete a certain corrective action wasmeasured in seconds, with the following results:5.2 5.6 7.6 6.8 4.8 5.7 9.0 6.0 4.9 7.46.5 7.9 6.8 4.3 8.5 3.6 6.1 5.8 6.4 4.0 Use a computer program to find a 95% confidence inter-val for the mean time to take corrective action.

Name: Twenty pilots were tested in a flight simulator, and thetime for each
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Description: Twenty pilots were tested in a flight simulator, and thetime for each to complete a certain corrective action wasmeasured in seconds, with the following results:5.2 5.6 7.6 6.8 4.8 5.7 9.0 6.0 4.9 7.46.5 7.9 6.8 4.3 8.5 3.6 6.1 5.8 6.4 4.0Use a compu

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section11.5: Interpreting Data

Problem 1C

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You are the newly appointed assistant administrator at a local hospital, and your first project is to investigate the quality of the patient meals put out by the food-service department. You conducted a 10-day survey by submitting a simple questionnaire to the 400 patients with each meal, asking that they simply check off that the meal was either satisfactory or unsatisfactory. For simplicity in this problem, assume that the response was 1,000 returned questionnaires from the 1,200 meals each day. The results are as follows: Day Number of Unsatisfactory Meals 1-Dec 74 2-Dec 42 3-Dec 64 4-Dec 80 5-Dec 40 6-Dec 50 7-Dec 65 8-Dec 70 9-Dec 40 10-Dec 75 a. Construct an appropriate control chart based on the questionnaire results, using two-sigma control limits. b. What comments can you make about the results of the survey? c. Show breakdown of computation/work.
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The trend in home building in recent years has been to emphasize open spaces and great rooms, rather than smaller living rooms and family rooms. A builder of speculative homes in the college community of Oxford, Ohio, had been building such homes, but his homes had been taking many months to sell and had been selling for substantially less than the asking price. In order to determine what types of homes would attract residents of the community, the builder contacted a statistician at a local college. The statistician went to a local real estate agency and obtained the data contained in file OxHome. This data includes the sales price (measured in thousand dollars), square footage, number of rooms, number of bedrooms, and age for each of 60 single-family residences recently sold in the community. Using this data, a regression model was built to predict the sales price of houses in this community. The regression equation from the model is: sales price (thousand dollars) = 19.5 + 0.1079…