The Tokyo Marine Consultant wants to conduct a survey with the aim is to estimate banking and hospital service time. For this reason, observations are made on the waiting time data of each customer for one period which is obtained from the two business sectors. The sample data was taken randomly from 11 customers separately and independently from bank and hospital customers. The following data are the waiting times from 22 samples of customers. Waiting Time (In minutes) Banking 9.66 5.9 8.02 5.79 8.73 3.82 8.01 8.35 10.1 6.6 5.6 Hospital 4.21 5.55 3.02 5.13 4.77 2.34 3.54 3.2 4.5 6.1 0.3 d. Is there a difference in average waiting time between the bank and the hospital at a significance level of 5%? e. If the number of samples extended to 100 sample and variance of population is known, what will be the differences in formula for interval estimation?
The Tokyo Marine Consultant wants to conduct a survey with the aim is to estimate banking and hospital service time. For this reason, observations are made on the waiting time data of each customer for one period which is obtained from the two business sectors. The sample data was taken randomly from 11 customers separately and independently from bank and hospital customers. The following data are the waiting times from 22 samples of
customers.
Waiting Time (In minutes)
Banking 9.66 5.9 8.02 5.79 8.73 3.82 8.01 8.35 10.1 6.6 5.6
Hospital 4.21 5.55 3.02 5.13 4.77 2.34 3.54 3.2 4.5 6.1 0.3
d. Is there a difference in average waiting time between the bank and the hospital at a significance level of 5%?
e. If the number of samples extended to 100 sample and variance of population is known, what will be the differences in formula for
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