2014 GSS asked number of hours worked last week, at all jobs. They found the mean...
2014 GSS asked number of hours worked last week, at all jobs. They found the mean of this sample was 41.91 hours. There were 1501 respondents in this sample, and the std dev is 14.351.
Knowing this, test the null hypothesis that then number of hours worked last week is equal to 40 vs the alternative hypothesis that it is greater than 40 hours at an a level of 0.01. Find P value and explain whether we reject the null hypothesis.
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2014 GSS asked number of hours worked last week, at all jobs.
They found the mean...
all questions Hours Worked Last Week Frequency Cumulative Percentage Percentage 3 9.4 9.4 2 6.3 15.6...
all questions
Hours Worked Last Week Frequency Cumulative Percentage Percentage 3 9.4 9.4 2 6.3 15.6 1 3.1 18.8 1 3.1 21.9 30 9.4 31.3 3.1 34.4 40 14 43.8 78.1 6.3 84.4 50 2 3.1 87.5 1 55 3.1 90.6 1 60 3.1 93.8 1 96.9 64 3.1 1 70 3.1 100.0 1 Total 32 100.0 1. What is the level of measurement, mode, and median for "hours worked last week"? 2. Construct quartiles for weeks worked last year....
. A university says the mean number of classroom hours per week for full-time faculty is...
. A university says the mean number of classroom hours per week for full-time faculty is 11.0. A random sample of the number of classroom hours for full-time faculty for one week is listed below. You work for a student organization and are asked to test this claim. At = 0.01, do you have enough evidence to reject the university’s claim? 11.8 8.6 12.6 7.9 6.4 10.4 13.6 9.1 a. State the null and alternative hypotheses. b. Find the test...
A survey of 570 working adults in the United States asked each participant how many hours...
A survey of 570 working adults in the United States asked each participant how many hours they worked last week. The survey showed an average of 41.525 hours worked per week, with a standard deviation of 14.828 hours. (Note that this is the average for people that work in the United States, including part-time employees. Among full time employees, the average work week is closer to 47 hours. Link if you're interested: http://www.gallup.com/poll/175286/hour-workweek-actually-longer-seven-hours.aspx) Is there enough evidence to show that...
1-5 Imagine you wish to determine whether the mean number of hours worked per week by...
1-5
Imagine you wish to determine whether the mean number of hours worked per week by women in a sample differs from the national 40-hour average. Use this information and the table below to test your hypothesis. Weekly Hours Worked Women Range 60 Minimum value Maximum value 65 Mean 41.5 Standard deviation 10.00 Number of observations 1 1 - Make three necessary assumptions. Assumption #1: Assumption #2: Assumption #3: 2-State the null and research hypotheses (use an alpha level of...
(20 pts)4. A university says the mean number of classroom hours per week for full-time faculty...
(20 pts)4. A university says the mean number of classroom hours per week for full-time faculty is 11.0. A random sample of the number of classroom hours for full-time faculty for one week is listed below. You work for a student organization and are asked to test this claim. At = 0.01, do you have enough evidence to reject the university's claim? 11.8 8.6 12.6 7.9 6.4 10.4 13.6 9.1 a. State the null and alternative hypotheses. b. Find the...
Some college graduates employed full-time work more than 40 hours per week, and some work fewer...
Some college graduates employed full-time work more than 40 hours per week, and some work fewer than 40 hours per week. We suspect that the mean number of hours worked per week by college graduates, , is different from 40 hours and wish to do a statistical test. We select a random sample of college graduates employed full-time and find that the mean of the sample is 36 hours and that the standard deviation is 3 hours. Based on this...
The answer is NOT "To greater than 1.678" A laptop manufacturer has completed extensive testing over a long time and claims that their new computer batteries will last for 4 hours with a s...
The answer is NOT "To greater than 1.678"
A laptop manufacturer has completed extensive testing over a long time and claims that their new computer batteries will last for 4 hours with a std. dev. of 0.2 hours, that the data is normally distributed, and lists this on their spec. sheet. One of their engineering interns took a recent sample of data claims that the mean is greater than that claimed on the spec. sheet based on a single same...
The belief is that the mean number of hours per week of part-time work of high...
The belief is that the mean number of hours per week of part-time work of high school seniors in a city is 10.5 hours. Data from a simple random sample of 23 high school seniors indicated that their mean number of part-time work was 11.5 with a standard deviation of 1.4. Test whether these data cast doubt on the current belief. (use α = 0.05) Part d: Determine the P-value for your test. a) p-value = 0.997581 b) p-value =...
The dean of a universily estimates that the mean number of classroom hours per week for...
The dean of a universily estimates that the mean number of classroom hours per week for full time facully is e fac 11.0. As a member of the student council, you want to test this claim A random sample of the number of umbe das roor hours for eigt ful time faculty for one week isshown in the table bel "At α:010, can you repot als0the dean's daim? Complete parts (a) through (d) below Assume the population is normall estrbuted...
Dean Halverson recently read that full-time college students study 20 hours each week. She decides to...
Dean Halverson recently read that full-time college students study 20 hours each week. She decides to do a study at her university to see if there is evidence that students study an average of less than 20 hours each week. A random sample of 32 students were asked to keep a diary of their activities over a period of several weeks. It was found that he average number of hours that the 32 students studied each week was 19.1 hours....
all questions
Hours Worked Last Week Frequency Cumulative Percentage Percentage 3 9.4 9.4 2 6.3 15.6 1 3.1 18.8 1 3.1 21.9 30 9.4 31.3 3.1 34.4 40 14 43.8 78.1 6.3 84.4 50 2 3.1 87.5 1 55 3.1 90.6 1 60 3.1 93.8 1 96.9 64 3.1 1 70 3.1 100.0 1 Total 32 100.0 1. What is the level of measurement, mode, and median for "hours worked last week"? 2. Construct quartiles for weeks worked last year....
A survey of 570 working adults in the United States asked each participant how many hours they worked last week. The survey showed an average of 41.525 hours worked per week, with a standard deviation of 14.828 hours. (Note that this is the average for people that work in the United States, including part-time employees. Among full time employees, the average work week is closer to 47 hours. Link if you're interested: http://www.gallup.com/poll/175286/hour-workweek-actually-longer-seven-hours.aspx) Is there enough evidence to show that...
1-5
Imagine you wish to determine whether the mean number of hours worked per week by women in a sample differs from the national 40-hour average. Use this information and the table below to test your hypothesis. Weekly Hours Worked Women Range 60 Minimum value Maximum value 65 Mean 41.5 Standard deviation 10.00 Number of observations 1 1 - Make three necessary assumptions. Assumption #1: Assumption #2: Assumption #3: 2-State the null and research hypotheses (use an alpha level of...
(20 pts)4. A university says the mean number of classroom hours per week for full-time faculty is 11.0. A random sample of the number of classroom hours for full-time faculty for one week is listed below. You work for a student organization and are asked to test this claim. At = 0.01, do you have enough evidence to reject the university's claim? 11.8 8.6 12.6 7.9 6.4 10.4 13.6 9.1 a. State the null and alternative hypotheses. b. Find the...
Some college graduates employed full-time work more than 40 hours per week, and some work fewer than 40 hours per week. We suspect that the mean number of hours worked per week by college graduates, , is different from 40 hours and wish to do a statistical test. We select a random sample of college graduates employed full-time and find that the mean of the sample is 36 hours and that the standard deviation is 3 hours. Based on this...
The answer is NOT "To greater than 1.678"
A laptop manufacturer has completed extensive testing over a long time and claims that their new computer batteries will last for 4 hours with a std. dev. of 0.2 hours, that the data is normally distributed, and lists this on their spec. sheet. One of their engineering interns took a recent sample of data claims that the mean is greater than that claimed on the spec. sheet based on a single same...
The dean of a universily estimates that the mean number of classroom hours per week for full time facully is e fac 11.0. As a member of the student council, you want to test this claim A random sample of the number of umbe das roor hours for eigt ful time faculty for one week isshown in the table bel "At α:010, can you repot als0the dean's daim? Complete parts (a) through (d) below Assume the population is normall estrbuted...
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