Give onfidence interval for variance of service time at bank

Reference no: EM13137570

The service time in queues should not have a large variance; otherwise, the queue tends to build up. A bank regularly checks service time by its tellers to determine its variance. A random sample of 22 service times (in minutes) gives s-square = 8. Give a 95% confidence interval for the variance of service time at the bank.

Reference no: EM13137570

Questions Cloud

Advise on social service debate : Should the Federal Government increase social services initiatives to improve the quality of life issues for the less fortunate ones. For instance:

Explain feasibility : Determining Feasibility, At steady state, a new power cycle is claimed by its inventor to develop 6 horsepower for a heat addition rate of 400 Btu/min

Prepare a short memo that defines a company operating : Prepare a short memo that defines a company’s operating, investing, and financing activities, and identifies that cash inflows and cash outflows related to each activity.

Total value of the unexpected cash windfall : An unexpected cash windfall has prompted management to consider either a special dividend of $6.00 per share or a stock repurchase for cash. What is the total value of the unexpected cash windfall?

Give onfidence interval for variance of service time at bank : A random sample of 22 service times (in minutes) gives s-square = 8. Give a 95% confidence interval for the variance of service time at the bank.

Should changes be made to the no child left behind act? : Research Topic: Should changes be made to the No Child Left Behind Act?

Role of federal-state governments : Does the Federal government have to do more to simplify and limit liability for state and local governments and industry for certain disasters?

What are some things you can do to improve poor credit : explain one way to establish your credit and one way to protect your credit? What are some things you can do to improve poor credit?

Examined the quality of the fluid at the turbine exit : Water is the working fluid in an ideal Rankine cycle. Saturated vapor enters the turbine at 18 MPa. The condenser pressure is 6 kPa. How do I determine the quality of the fluid at the turbine exit

User Account

All Pages