The sample size needed to be 99% confident that the sample mean score is within 2 points of the population mean score for students who are high on the need for closure.

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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 8, Problem 6CR

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To find: The sample size needed to be 99% confident that the sample mean score is within 2 points of the population mean score for students who are high on the need for closure.

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A group of 100 people, who lived at varying distances (in kilometers) from an island nuclear power station, were asked if they thought a full evacuation of the area was required, when it went critical. The researches wanted to know if the opinion to evacuate or not depended on how far from the reactor people lived, Partial results of the questionnaire are shown in the table below. 0-3 km distance 3 -6 km distance 6 + km distance Totals Evacuation needed X X X 54 Evacuation not X XX needed Totals 33 32 XX XX You are doing a Chi Square test for independence. XX denotes row/column totals. Compute the expected number of people living 6+km away who would prefer NOT to evacuate. Give your answer to 2 decimal places.

- х i Data Table ets he Full data set O Assets R&D Expense R&D Expense 712.087 Assets 3,478.557 3,462.224 1,206.455 345.709 7,785.525 389.959 918.899 90.404 117.895 2,390.016 257.571 446.339 47.523 678.531 71.401 1,069.117 2,465.859 3,945.287 168.631 111.724 2,648.273 3,406.446 9,250.323 292.876 224.715 383.186 nt 410.051 988.349 19.257 485.204 55.161 493.116 55.046 2,363.477 251.699 0) 102.148 13.489 221.321 27.958 3,728.419 1,389.377 1,706.486 327.691 1,465.861 158.293 141.616 165.093 19.154 161.317 2,988.141 301.803 nat Print Done

Answer 2

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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 8, Problem 6CR

To determine

To find: The sample size needed to be 99% confident that the sample mean score is within 2 points of the population mean score for students who are high on the need for closure.

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Answer 3

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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 8, Problem 6CR

To determine

To find: The sample size needed to be 99% confident that the sample mean score is within 2 points of the population mean score for students who are high on the need for closure.

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Answer 4

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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 8, Problem 6CR

To determine

To find: The sample size needed to be 99% confident that the sample mean score is within 2 points of the population mean score for students who are high on the need for closure.

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Chapter 8, Problem 6CR

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To find: The sample size needed to be 99% confident that the sample mean score is within 2 points of the population mean score for students who are high on the need for closure.

Answer 6

Chapter 8, Problem 6CR

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To find: The sample size needed to be 99% confident that the sample mean score is within 2 points of the population mean score for students who are high on the need for closure.

Answer 7

Chapter 8, Problem 6CR

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To find: The sample size needed to be 99% confident that the sample mean score is within 2 points of the population mean score for students who are high on the need for closure.

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The sample size needed to be 99% confident that the sample mean score is within 2 points of the population mean score for students who are high on the need for closure.

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