A firm wants to obtain information on the hours of overtime work of employees. Stratified random...

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A firm wants to obtain information on the hours of overtime work of employees. Stratified random sampling is used and the employees are stratified as follows: Stratum Managers Technicians 40 25 Administrators 80 9 Nh s 25 36 If a simple random sample of 50 employees is drawn, use the Neyman allocation to determine the sample sizes for the three strata. (4) (ii) Use the following information to determine a 95% confidence interval for the mean number of hours of overtime: Stratum Nh nh Yh s² Managers 25 4 12.5 36 Technicians 40 10 10.8 25 Administrators 80 16 6.0 9 (4) A firm wants to obtain information on the hours of overtime work of employees. Stratified random sampling is used and the employees are stratified as follows: Stratum Managers Technicians 40 25 Administrators 80 9 Nh s 25 36 If a simple random sample of 50 employees is drawn, use the Neyman allocation to determine the sample sizes for the three strata. (4) (ii) Use the following information to determine a 95% confidence interval for the mean number of hours of overtime: Stratum Nh nh Yh s² Managers 25 4 12.5 36 Technicians 40 10 10.8 25 Administrators 80 16 6.0 9 (4)

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i Using Neyman allocation to determine sample sizes for the three strata Neyman allocation involves ... View the full answer