# mba business reserach methods

posted by .

Sampling
A manufacturing company's quality control personnel have recorded the proportion of defective
items for each of 500 monthly shipments of one of the computer components that the company produces.
See data below.

The company doesn't have time to review all of these.

(a) Use MS Excel to generate a random sample of 25 from the 500.
(b) Computer the point estimate of the mean.
(c) Compute a 90% confidence interval of the mean.
(d) Compute a 99% confidence interval of the mean.
(e) Chart the 90% and 99% confidence intervals using the stock chart (high-low-close).
(f) Repeat (c) through (e) for a random sample of 50.
(g) Comment on the differences in confidence intervals.

• mba business reserach methods -

What kind of HELP do you need? You need to be specific when asking questions here.

If all you do is post your entire assignment, with no evidence of thinking on your part, nothing will happen since no one here will do your work for you. But if you are specific about what you don't understand about the assignment or exactly what help you need, someone might be able to assist you.

## Similar Questions

I hope that someone can help me answer this question because I am totaly mind blocked. My question is: I will be interviewed for an evening business report. As CEO of your computer manufacturing company, you must answer the following …

Can you help. Thinking about this I think a company can't really make a-lot of profit if they spend no money on quality controls because,"quality control is the more traditional way that businesses have used to manage quality. Quality …

I think a company can't really make a-lot of profit if they spend no money on quality controls because,"quality control is the more traditional way that businesses have used to manage quality. Quality control is concerned with checking …

Visit the head of personnel-Human Resource Department of a company.Find out the methods used by the company for training and appraisal of its managers.How much weightage is given to formal training programmes outsidethe job ?
5. ### Data Management Probability

A toy manufacturing company that 5% of there toys are defective. A quality control person checks 50 toys. a) What is the probability that there will be exactly two defective toys found?
6. ### Probability and Statistics 2

Bad Wheels Tire Company is interested in estimating the proportion of defective tires that it produces. The company tested a sample of 500 tires and found 16 to be defective. Find a 99% upper bound confidence interval for the true …
7. ### statistics

A manufacturing company produces 10,000 plastic glasses per week. This company supplies plastic glasses to another company, which packages the glasses as part of picnic sets. The second company randomly samples 10 glasses from the …
8. ### statistics

A manufacturing company produces 10,000 plastic glasses per week. This company supplies plastic glasses to another company, which packages the glasses as part of picnic sets. The second company randomly samples 10 glasses from the …
9. ### math (statistics)

A manufacturing company produces 10,000 plastic glasses per week. This company supplies plastic glasses to another company, which packages the glasses as part of picnic sets. The second company randomly samples 10 glasses from the …
10. ### math/statistics

In a manufacturing plant, three machines, A, B, and C, produce 37%, 36%, and 27%, respectively, of the total production. The company's quality-control department has determined that 1.5% of the items produced by Machine A, 2% of the …

More Similar Questions