You may need to use the appropriate appendix table or technology to answer this question. Older people often have a hard time finding work. AARP 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 contained in the file JobSearch are consistent with the AARP findings. 21 14 51 16 17 14 16 12 48 0 27 17 32 24 12 10 52 21 26 14 13 24 19 28 26 26 10 21 44 36 22 39 17 17 10 19 16 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. weeks (b) At 95% confidence, what is the margin of error? (Round your answer to four decimal places.) weeks (c) What is the 95% confidence interval estimate of the mean? (Round your answers to two decimal places.) weeks to weeks (d) Discuss the degree of skewness found in the sample data. What suggestion would you make for a repeat of this study? A histogram of the data shows the distribution is perfectly symmetric. One might suggest collecting a larger sample, at least 50, in the future.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. A histogram of the data shows the distribution is perfectly symmetric. One might suggest collecting a smaller sample, at most 15, in the future.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.

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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You may need to use the appropriate appendix table or technology to answer this question.

Older people often have a hard time finding work. AARP 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 contained in the file JobSearch are consistent with the AARP findings.

21	14	51	16	17	14	16	12	48	0
27	17	32	24	12	10	52	21	26	14
13	24	19	28	26	26	10	21	44	36
22	39	17	17	10	19	16	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.

weeks

(b)

At 95% confidence, what is the margin of error? (Round your answer to four decimal places.)

weeks

(c)

What is the 95% confidence interval estimate of the mean? (Round your answers to two decimal places.)

weeks to weeks

(d)

Discuss the degree of skewness found in the sample data. What suggestion would you make for a repeat of this study?

A histogram of the data shows the distribution is perfectly symmetric. One might suggest collecting a larger sample, at least 50, in the future.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. A histogram of the data shows the distribution is perfectly symmetric. One might suggest collecting a smaller sample, at most 15, in the future.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.

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