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Older people often have a hard time finding work. A research group reported on the number of weeks it takes a worker aged 55 plus to find a job. The data on number of weeks spent searching for a job is given in the table below. 21 27 13 14 51 16 17 14 16 17 32 24 24 19 28 12 10 52 21 26 12 48 0 22 39 17 17 10 19 16 26 14 26 10 21 44 36 22 5 22 (a) Provide a point estimate of the population mean number of weeks it takes a worker aged 55 plus to find a job. 22 weeks (b) At 95% confidence, what is the margin of error? (Round your answer to four decimal places.) 3.68 X weeks (c) What is the 95% confidence interval estimate of the mean? (Round your answers to two decimal places.) 18.32 Xweeks to 25.68 X weeks (d) Discuss the degree of skewness found in the sample data. What suggestion would you make for a repeat of this study? O A histogram of the data shows some evidence that the distribution may be skewed to the right. One might suggest collecting a larger sample, at least 50, in the future. O A histogram of the data shows the distribution is perfectly symmetric. One might suggest collecting a larger sample, at least 50, in the future. O A histogram of the data shows some evidence that the distribution may be skewed to the right. One might suggest collecting a smaller sample, at most 15, in the future. O A histogram of the data shows the distribution is perfectly symmetric. One might suggest collecting a smaller sample, at most 15, in the future.

Older people often have a hard time finding work. A research group reported on the number of weeks it takes a worker aged 55 plus to find a job. The data on number of weeks spent searching for a job is given in the table below. 21 27 13 14 51 16 17 14 16 17 32 24 24 19 28 12 10 52 21 26 12 48 0 22 39 17 17 10 19 16 26 14 26 10 21 44 36 22 5 22 (a) Provide a point estimate of the population mean number of weeks it takes a worker aged 55 plus to find a job. 22 weeks (b) At 95% confidence, what is the margin of error? (Round your answer to four decimal places.) 3.68 X weeks (c) What is the 95% confidence interval estimate of the mean? (Round your answers to two decimal places.) 18.32 Xweeks to 25.68 X weeks (d) Discuss the degree of skewness found in the sample data. What suggestion would you make for a repeat of this study? O A histogram of the data shows some evidence that the distribution may be skewed to the right. One might suggest collecting a larger sample, at least 50, in the future. O A histogram of the data shows the distribution is perfectly symmetric. One might suggest collecting a larger sample, at least 50, in the future. O A histogram of the data shows some evidence that the distribution may be skewed to the right. One might suggest collecting a smaller sample, at most 15, in the future. O A histogram of the data shows the distribution is perfectly symmetric. One might suggest collecting a smaller sample, at most 15, in the future.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Older people often have a hard time finding work. A research group reported on the number of weeks it takes a worker aged 55 plus to find a job. The data on number of weeks spent searching for a job is given in the table below. 21 27 13 14 51 16 17 14 16 17 32 24 24 19 28 12 10 52 21 26 12 48 0 22 39 17 17 10 19 16 26 14 26 10 21 44 36 22 5 22 (a) Provide a point estimate of the population mean number of weeks it takes a worker aged 55 plus to find a job. 22 weeks (b) At 95% confidence, what is the margin of error? (Round your answer to four decimal places.) 3.68 X weeks (c) What is the 95% confidence interval estimate of the mean? (Round your answers to two decimal places.) 18.32 Xweeks to 25.68 X weeks (d) Discuss the degree of skewness found in the sample data. What suggestion would you make for a repeat of this study? O A histogram of the data shows some evidence that the distribution may be skewed to the right. One might suggest collecting a larger sample, at least 50, in the future. O A histogram of the data shows the distribution is perfectly symmetric. One might suggest collecting a larger sample, at least 50, in the future. O A histogram of the data shows some evidence that the distribution may be skewed to the right. One might suggest collecting a smaller sample, at most 15, in the future. O A histogram of the data shows the distribution is perfectly symmetric. One might suggest collecting a smaller sample, at most 15, in the future.
Transcribed Image Text:Older people often have a hard time finding work. A research group reported on the number of weeks it takes a worker aged 55 plus to find a job. The data on number of weeks spent searching for a job is given in the table below. 21 27 13 14 51 16 17 14 16 17 32 24 24 19 28 12 10 52 21 26 12 48 0 22 39 17 17 10 19 16 26 14 26 10 21 44 36 22 5 22 (a) Provide a point estimate of the population mean number of weeks it takes a worker aged 55 plus to find a job. 22 weeks (b) At 95% confidence, what is the margin of error? (Round your answer to four decimal places.) 3.68 X weeks (c) What is the 95% confidence interval estimate of the mean? (Round your answers to two decimal places.) 18.32 Xweeks to 25.68 X weeks (d) Discuss the degree of skewness found in the sample data. What suggestion would you make for a repeat of this study? O A histogram of the data shows some evidence that the distribution may be skewed to the right. One might suggest collecting a larger sample, at least 50, in the future. O A histogram of the data shows the distribution is perfectly symmetric. One might suggest collecting a larger sample, at least 50, in the future. O A histogram of the data shows some evidence that the distribution may be skewed to the right. One might suggest collecting a smaller sample, at most 15, in the future. O A histogram of the data shows the distribution is perfectly symmetric. One might suggest collecting a smaller sample, at most 15, in the future.
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