A facilities manager at a university reads in a research report that the mean amount of...
A facilities manager at a university reads in a research report that the mean amount of time spent in the shower by an adult is 5 minutes. He decides to collect data to see if the mean amount of time that college students spend in the shower is significantly different from 5 minutes. In a sample of 11 students, he found the average time was 4.52 minutes and the standard deviation was 0.75 minutes. Using this sample information, conduct the appropriate hypothesis test at the 0.1 level of significance. Assume normality.
c) What is the P-value for the test? Give your answer to four
decimal places.
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A facilities manager at a university reads in a research report
that the mean amount of...
A study was done to compare the amount of time per day students at public and...
A study was done to compare the amount of time per day students at public and private universities spend on Facebook. The study was composed of 200 students from a private university and 300 students from a public university. The time that students at a private university spent on Facebook had a Normal distribution with a mean of 220 minutes and a standard deviation of 36 minutes. The time that students at a public university spent on Facebook had a...
Do female college students spend more time than male college students watching TV? This was one...
Do female college students spend more time than male college students watching TV? This was one of the questions investigated by the authors of an article. Each student in a random sample of 46 male students at a university in England and each student in a random sample of 38 female students from the same university kept a diary of how he or she spent time over a three-week period. For the sample of males, the mean time spent watching...
A manager wants to conduct research on the amount of time staff spend traveling to and...
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3. [3/4 Points] DETAILS PREVIOUS ANSWERS PODSTAT5 11.E.010. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Do...
3. [3/4 Points] DETAILS PREVIOUS ANSWERS PODSTAT5 11.E.010. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Do male college students spend more time than female college students using a computer? This was one of the questions investigated by the authors of an article. Each student in a random sample of 46 male students at a university in England and each student in a random sample of 38 female students from the same university kept a diary of how he or she...
A study was done to compare the amount of time per day students at public and...
A study was done to compare the amount of time per day students at public and private universities spend on Facebook. The study was composed of 200 students from a private university and 300 students from a public university. The time that students at a private university spent on Facebook had a Normal distribution with a mean of 220 minutes and a standard deviation of 36 minutes. The time that students at a public university spent on Facebook had a...
4. You want to estimate the amount of time college students spend on facebook each month....
4. You want to estimate the amount of time college students spend on facebook each month. How many college students must be surveyed in order to be 95% confident that your sample mean is 15 minutes of the population mean? Based on results from a prior Nielsen survey, assume that the standard deviation of the population of monthly time spent on facebook is 210 minutes.
Nielsen Media Research wants to estimate the mean amount of time ( in minutes) that full-time...
Nielsen Media Research wants to estimate the mean amount of time ( in minutes) that full-time college students spend watching television each weekday. Find the sample size necessary to estimate that mean with a 15-minute margin of error. Assume that a 96 % confidence level is desired. Also assume that a pilot study showed that the standard deviation is estimated to be 112.2 min.
Practice for Hypothesis Testing (with z) 3. A bank claims that its customers wait in line...
Practice for Hypothesis Testing (with z) 3. A bank claims that its customers wait in line for an average of 3 minutes with a standard deviation of 1.4 minutes. You think customers wait for more than three minutes. You sample the waiting times of 26 customers and find a sample mean of 3.5 minutes. Do a hypothesis test using a= 0.02. 4. A college’s admissions guide state that students spend approximately $300 for textbooks each semester. A random sample of...
A college’s admissions guide state that students spend approximately $300 for textbooks each semester. A random...
A college’s admissions guide state that students spend approximately $300 for textbooks each semester. A random sample of 31 college students finds that the sample mean for the amount spent on textbooks is $365. Assume that the standard deviation for the population is $75. Test at the a = .02 level to determine if students spend significantly more than the amount stated in the admission’s guide.
An office manager claims that the amount of time individual employees spend replying to emails each...
An office manager claims that the amount of time individual employees spend replying to emails each hour has a mean of 14 minutes and a standard deviation of 2.3 minutes, A particular employee was observed for one hour and the amount of time spent replying to emails was 11 minutes, Calculate the z-score for this time spent replying to emails. Round to two decimal places.
3. [3/4 Points] DETAILS PREVIOUS ANSWERS PODSTAT5 11.E.010. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Do male college students spend more time than female college students using a computer? This was one of the questions investigated by the authors of an article. Each student in a random sample of 46 male students at a university in England and each student in a random sample of 38 female students from the same university kept a diary of how he or she...
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