Do squash players burn more calories per hour

Assignment Help Operation Management

Reference no: EM131931704

Question :

Part A : Two operators are measuring parts produced by two different machines. The team leader wants to test the difference between the sample means. Samples are taken in pairs and their differences are calculated. Please use the data in the table below to perform a hypothesis test at the 90%, 95%, and 99% confidence levels to determine if the mean of the two parts are different or not.

	Machine 1	Machine 2
1	5.257	5.243
2	5.22	5.193
3	5.235	5.225
4	5.23	5.22
5	5.225	5.223

Part B : A vendor claim that the average weight of a shipment of n parts is 1.84. The customer randomly chooses 64 parts and finds that the sample has an average weight of 1.88. Suppose that the standard deviation of the population is known to be 0.03. Should the customer reject the lot? Assume 90%, 95%, 99% confidence intervals and comment on your answers.

Part C : An unusually high concentration of metals in drinking water can pose a health hazard. Ten pairs of data were taken measuring copper concentration (g/cm3) in the drinking water before and after using a water filter. Does the data suggest that the true average concentration in the drinking water before using the water filter exceeds that after using the water filter? Conduct the test at 1%, 5%, 10% significance levels.

Before Using Water Filter	After Using Water Filter
0.430	0.415
0.266	0.238
0.567	0.390
0.531	0.410
0.707	0.605
0.716	0.609
0.651	0.632
0.589	0.523
0.469	0.411
0.723	0.612

Part D : A health researcher read that a 200-pound male can burn an average of 524 calories per hour playing tennis. 37 males were randomly selected and the mean number of calories burned per hour playing squash was 534.8 with a standard deviation of 45.9 calories. Do squash players burn more calories per hour than tennis players? Assume 90%, 95%, 99% confidence intervals and comment on your answers.

Reference no: EM131931704

Questions Cloud

Return on the firm common stock : If the firm's yield to maturity on bonds is 8.5% and investors require a 12% return on the firm's common stock, what is the firm's WACC

Calculate the expected-required rate of return : Using the Capital Asset Pricing Model, calculate the expected / required rate of return. (Enter your answer as a percentage, not in decimal form.

Bond outstanding with a coupon rate : Union Local School District has a bond outstanding with a coupon rate of 3.7% paid semiannually and 16 years to maturity.

Prepare a trial balance as of the end of november : Prepare ledger accounts (in balance column format) and post the journal entries from requirement 1 to them. Prepare a trial balance as of the end of November.

Do squash players burn more calories per hour : Two operators are measuring parts produced by two different machines. The team leader wants to test the difference between the sample means.

What is the price per share of samsung : Assume all cash flows are received at the end of each year. What is the price per share of Samsung?

What is the equivalent uniform amount per month : According to the Government Accountability Office (GAO), if the U.S.Postal Service does not change its business model, it will lose $48million next month

Project free cash flows : You should use the company's WACC of 10% to discount the project's free cash flows. True or False? Why?

What is the firm weighted average cost : What is the firm's weighted average cost of capital if the tax rate is 35 percent?

User Account

All Pages