Suppose you are hiring employees who are suppose to work on an average 45 hours a...
Suppose you are hiring employees who are suppose to work on an average 45 hours a week. You will take a sample of 27 of them for different weeks and you observe the following numbers of hours that they work during a week.
73, 19,16,64,28,28,31,90,60,56,31,56,22,18,45,48,17,17,17,91,92,63,50,51,69,16,17
Is there enough evidence in our sample to conclude that your employees are not working 45 hours a week in average, assuming 0.95 level of confidence. Please do all the steps need and write your conclusion with enough explanation.
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Suppose you are hiring employees who are suppose to work on an average 45 hours a...
Suppose you are hiring employees who are suppose to work on an average 45 hours a...
Suppose you are hiring employees who are suppose to work on an average 45 hours a week. You will take a sample of 27 of them for different weeks and you observe the following numbers of hours that they work during a week. 73, 19,16,64,28,28,31,90,60,56,31,56,22,18,45,48,17,17,17,91,92,63,50,51,69,16,17 Is there enough evidence in our sample to conclude that your employees are not working 45 hours a week in average, assuming 0.95 level of confidence. Please do all the steps need and write your...
4. Suppose it is known that American adults sleep an average of 7.8 hours daily. You...
4. Suppose it is known that American adults sleep an average of 7.8 hours daily. You suspect that college students sleep less than this on average, so you collect a random sample of fifteen students at NCAT and get the following data on their typical daily sleep amount (in hours): 6.7 4.5 6.4 8.6 5.5 8.2 5.9 7.5 4.4 6.0 6.3 8.3 7.3 5.7 10.1 (a) Use this sample to see if there is sufficient evidence to conclude that the...
Q 3 Are employees who work more hours per week less satisfied with their job? Data...
Q 3
Are employees who work more hours per week less satisfied with
their job? Data was collected from a random sample of 22 employees
at a company on the following variables:
Job satisfaction (measures 0 to 100)
Total hours worked per week
Coefficients
Standard Error
intercept
120.7223
16.8721
X variable 1
-1.2033
0.3188
(a)Construct a 95% confidence interval estimate of the
population mean job satisfaction for employees who works 55 hours
per week. The sample mean total hours worked...
10) Suppose a national survey finds that 73% of restaurant employees say that work stress has...
10) Suppose a national survey finds that 73% of restaurant employees say that work stress has a negative impact on their personal lives. A random sample of 200 employees of large restaurant chain finds that 141 employees say that work stress has a negative impact on their personal lives. Is there enough evidence to show that the percentage of work stress employees for the restaurant chain differs from the national percentage? Test this hypothesis atthe α-0.05 level. REFocus- 100%
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 =...
2. Suppose that a national survey finds that 73 percent of restaurant employees say that work...
2. Suppose that a national survey finds that 73 percent of restaurant employees say that work stress has a negative impact on their personal lives. A random sample of 200 employees of a large restaurant chain finds that 141 employees say that work stress has a negative impact on their personal lives. Conduct a hypothesis testing to test whether the percentage of work-stressed employees for the restaurant chain differs from the national percentage. Is this an one-sample or two-sample test?...
Suppose that we are interested in determining whether cats tend to sleep more than 12 hours...
Suppose that we are interested in determining whether cats tend to sleep more than 12 hours a day on average let denote the true number of hours that cats sleep each night. You observe 32 cats for a day and record the number of hours that each of the cats slept. The average of your samples 13.1 hours and the sample standard deviation of your sample is 2.8 hours. Your confidence intervalis (a) Construct a 99% confidence interval for hours...
Employees turnover Healthcare employees make 112 $ per hour on average. They normally work 8 hours...
Employees turnover Healthcare employees make 112 $ per hour on average. They normally work 8 hours per day. Use this information to calculate retaining employees’ costs. Some of the cost will not be relevant in your analysis. please provide some details and explaining. Hiring New Staff: Marketing costs per employee: 19,000 Pay for relocation per employee: 19,000 Training per employee: 375,000 Nonproductive hours due to fatigue per employee during the training period (current staff) per employee: 37,000 Retaining Employees: Productive...
Suppose a consumer product researcher wanted to refute a manufacturer’s claim that their highlighters could write...
Suppose a consumer product researcher wanted to refute a manufacturer’s claim that their highlighters could write continuously for 14 hours. The researcher tested 40 highlighters and recorded the number of continuous hours each highlighter wrote before drying up. The results of her study found that the highlighters lasted an average of 13.6 hours with a standard deviation of 1.3 hours. a.) Is there enough evidence to conclude that the highlighters do not write continuously for 14 hours? Use α =...
The average number of hours that Canadians spend on the internet at home has been 100...
The average number of hours that Canadians spend on the internet at home has been 100 hours per month for several years. In early March of 2020, as more people were starting to work and study at home, a random sample of 25 households found a mean of 104 hours with a sample standard deviation of 10 hours. The population standard deviation is unknown. Assume that hours spent on the internet are approximately normally distributed. Is there enough evidence to...
4. Suppose it is known that American adults sleep an average of 7.8 hours daily. You suspect that college students sleep less than this on average, so you collect a random sample of fifteen students at NCAT and get the following data on their typical daily sleep amount (in hours): 6.7 4.5 6.4 8.6 5.5 8.2 5.9 7.5 4.4 6.0 6.3 8.3 7.3 5.7 10.1 (a) Use this sample to see if there is sufficient evidence to conclude that the...
Q 3
Are employees who work more hours per week less satisfied with
their job? Data was collected from a random sample of 22 employees
at a company on the following variables:
Job satisfaction (measures 0 to 100)
Total hours worked per week
Coefficients
Standard Error
intercept
120.7223
16.8721
X variable 1
-1.2033
0.3188
(a)Construct a 95% confidence interval estimate of the
population mean job satisfaction for employees who works 55 hours
per week. The sample mean total hours worked...
10) Suppose a national survey finds that 73% of restaurant employees say that work stress has a negative impact on their personal lives. A random sample of 200 employees of large restaurant chain finds that 141 employees say that work stress has a negative impact on their personal lives. Is there enough evidence to show that the percentage of work stress employees for the restaurant chain differs from the national percentage? Test this hypothesis atthe α-0.05 level. REFocus- 100%
2. Suppose that a national survey finds that 73 percent of restaurant employees say that work stress has a negative impact on their personal lives. A random sample of 200 employees of a large restaurant chain finds that 141 employees say that work stress has a negative impact on their personal lives. Conduct a hypothesis testing to test whether the percentage of work-stressed employees for the restaurant chain differs from the national percentage. Is this an one-sample or two-sample test?...
Suppose that we are interested in determining whether cats tend to sleep more than 12 hours a day on average let denote the true number of hours that cats sleep each night. You observe 32 cats for a day and record the number of hours that each of the cats slept. The average of your samples 13.1 hours and the sample standard deviation of your sample is 2.8 hours. Your confidence intervalis (a) Construct a 99% confidence interval for hours...
The average number of hours that Canadians spend on the internet at home has been 100 hours per month for several years. In early March of 2020, as more people were starting to work and study at home, a random sample of 25 households found a mean of 104 hours with a sample standard deviation of 10 hours. The population standard deviation is unknown. Assume that hours spent on the internet are approximately normally distributed. Is there enough evidence to...
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