# Statistics and Probability questions assignment

Question 1:  In a random sample of 29 people, the mean commute time to work was 32.6 minutes and the standard deviation was 7.1 minutes. Assume the population is normally distributed and use a t-distribution to construct an 80% confidence interval for the population mean µ. What is the margin of error of µ? Interpret the results.

Don't use plagiarized sources. Get Your Custom Essay on
Statistics and Probability questions assignment
Get a PLAGIARISM-FREE custom essay written for you!

Question 2: Construct the indicated confidence interval for the population mean µ using the t-distribution.    c=0.99, x=14.9, s= 2.0, n=5

Question 3: A publisher wants to estimate the mean length of time (in minutes) all adults spend reading newspapers. To determine the estimate, the publisher takes a random sample of 15 people and obtains the results below. From past studies, the publisher assumes σ is 2.1 minutes and that the population of times is normally distributed.

9    7    10    11    8    11    9    12    11    10    12    6    6    12    12

Construct the 90% and 99% confidence intervals for the population mean. Which interval is wider? If convenient, use technology to construct the confidence intervals.

Pages (550 words)
Approximate price: -

Plagiarism Free Papers

All our papers are original and written from scratch. We will email you a plagiarism report alongside your completed paper once done.

Free Revisions

All papers are submitted ahead of time. We do this to allow you time to point out any area you would need revision on, and help you for free.

Free Title-page

Free Bibliography

Originality & Security

At Homework Sharks, we take confidentiality seriously and all your personal information is stored safely and do not share it with third parties for any reasons whatsoever. Our work is original and we send plagiarism reports alongside every paper.

Our agents are online 24/7. Feel free to contact us through email or talk to our live agents.

Try it now!

## Calculate the price of your order

We'll send you the first draft for approval by at
Total price:
\$0.00

How it works?

Fill in the order form and provide all details of your assignment.

Proceed with the payment

Choose the payment system that suits you most.

Our Services

We work around the clock to see best customer experience.

## Flexible Pricing

Our prces are pocket friendly and you can do partial payments. When that is not enough, we have a free enquiry service.