Question
In: Statistics and Probability
Older people often have a hard time finding work. AARP reported on the number of weeks...
Older people often have a hard time finding work. AARP reported on the number of weeks it takes a worker aged plus to find a job. The data on number of weeks spent searching for a job contained in the table below.
a. Provide a point estimate of the population mean number of weeks it takes a worker aged plus to find a job. Round the answer to two decimal places.
weeks
b. At confidence, what is the margin of error? Round the answer to four decimal places.
c. What is the confidence interval estimate of the mean? Round the answers to two decimal places.
,
d. Find the skewness. Round the answer to four decimal places.
Discuss the degree of skewness found in the sample data. What suggestion would you make for a repeat of this study.
Considering a slightly larger sample next time ( would be/would not be) Item 6 a good strategy.
Solutions
orchestra answered 1 year agoRelated Solutions
Older people often have a hard time finding work. AARP reported on the number of weeks...
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 table below. 17 0 0 28 18 37 7 13 33 0 24 50 4 48
5 19 3 25 2 29 4 8 8 32 1 27 7 47 6 0
a. Provide a point estimate of the...
Older people often have a hard time finding work. AARP reported on the number of weeks...
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 are
contained in the Excel Online file below. Construct a spreadsheet
to answer the following questions.
Confidence Level: 0.95
Job Search Time (Weeks):
10
50
7
3
10
17
6
27
1
14
19
11
13
2
0
40
6
16
52...
A leading magazine (like Barron's) reported at one time that the average number of weeks an...
A leading magazine (like Barron's) reported at one time that the
average number of weeks an individual is unemployed is 17.2 weeks.
Assume that for the population of all unemployed individuals the
population mean length of unemployment is 17.2 weeks and that the
population standard deviation is 8.1 weeks. Suppose you would like
to select a random sample of 190 unemployed individuals for a
follow-up study.
Find the probability that a single randomly selected value is
between 15.6 and 18.8....
A leading magazine (like Barron's) reported at one time that the average number of weeks an...
A leading magazine (like Barron's) reported at one time that the
average number of weeks an individual is unemployed is 33.9 weeks.
Assume that for the population of all unemployed individuals the
population mean length of unemployment is 33.9 weeks and that the
population standard deviation is 4.9 weeks. Suppose you would like
to select a random sample of 218 unemployed individuals for a
follow-up study. Find the probability that a single randomly
selected value is between 33.7 and 34.1....
A leading magazine (like Barron's) reported at one time that the average number of weeks an...
A leading magazine (like Barron's) reported at one time that the
average number of weeks an individual is unemployed is 40 weeks.
Assume that for the population of all unemployed individuals the
population mean length of unemployment is 40 weeks and that the
population standard deviation is 3.2 weeks. Suppose you would like
to select a random sample of 79 unemployed individuals for a
follow-up study.
Find the probability that a single randomly selected value is
greater than 40.6. P(X...
A leading magazine (like Barron's) reported at one time that the average number of weeks an...
A leading magazine (like Barron's) reported at one time that the
average number of weeks an individual is unemployed is 39 weeks.
Assume that for the population of all unemployed individuals the
population mean length of unemployment is 39 weeks and that the
population standard deviation is 3.5 weeks. Suppose you would like
to select a random sample of 88 unemployed individuals for a
follow-up study.
Find the probability that a single randomly selected value is
greater than 39.6. P(X...
A leading magazine (like Barron's) reported at one time that the average number of weeks an...
A leading magazine (like Barron's) reported at one time that the
average number of weeks an individual is unemployed is 27 weeks.
Assume that for the population of all unemployed individuals the
population mean length of unemployment is 27 weeks and that the
population standard deviation is 9 weeks. Suppose you would like to
select a random sample of 32 unemployed individuals for a follow-up
study.
Find the probability that a single randomly selected value is
less than 28. P(X...
A leading magazine (like Barron's) reported at one time that the average number of weeks an...
A leading magazine (like Barron's) reported at one time that the
average number of weeks an individual is unemployed is 36.3 weeks.
Assume that for the population of all unemployed individuals the
population mean length of unemployment is 36.3 weeks and that the
population standard deviation is 7.5 weeks. Suppose you would like
to select a random sample of 124 unemployed individuals for a
follow-up study.
Find the probability that a single randomly selected value is
between 35.8 and 36.1....
A leading magazine (like Barron's) reported at one time that the average number of weeks an...
A leading magazine (like Barron's) reported at one time that the
average number of weeks an individual is unemployed is 36.3 weeks.
Assume that for the population of all unemployed individuals the
population mean length of unemployment is 36.3 weeks and that the
population standard deviation is 7.5 weeks. Suppose you would like
to select a random sample of 124 unemployed individuals for a
follow-up study.
Find the probability that a single randomly selected value is
between 35.8 and 36.1....
A leading magazine (like Barron's) reported at one time that the average number of weeks an...
A leading magazine (like Barron's) reported at one time that the
average number of weeks an individual is unemployed is 25 weeks.
Assume that the length of unemployment is normally distributed with
population mean of 25 weeks and the population standard deviation
of 9 weeks. Suppose you would like to select a random sample of 35
unemployed individuals for a follow-up study. Round the
answers of following questions to 4 decimal places.
What is the distribution of XX? XX ~...
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