# Statistics -6 | Mathematics homework help

Homework #6

Don't use plagiarized sources. Get Your Custom Essay on
Statistics -6 | Mathematics homework help
Just from \$13/Page

Use the following scenario to answer the next 3 questions.  Plastic bags used for packaging produce are manufactured so that the breaking strength of the bag is normally distributed with a mean of 5 pounds per square inch and a standard deviation of 1.5 pounds per square inch.   A sample of 25 bags is selected. So we have that the breaking strength of the bags is normal with µ=5 lbs/in2 and σ = 1.5 lbs/in2.   Also, n = 25.

1)         What is the probability that the average breaking strength is between 5 and 5.5 pounds per square inch?

2)         What is the probability that the average breaking strength is between 4.2 and 4.5 pounds per square inch?

3)         What is the probability that the average breaking strength is less than 4.6 pounds per square inch?

Use the following scenario to answer the next 3 questions.  Historically, 93% of the deliveries of an overnight mail service arrive before 10:30 the following morning.   Random samples of 500 deliveries are selected.  So we have a “historic” (read: population) proportion of p = .93.

Also, n = 500.

4)         What proportion of the samples will have between 93% and 95% of the deliveries arriving before 10:30 the following morning?

5)         What proportion of the samples will have more than 95% of the deliveries arriving before 10:30 the following morning?

6)         What is the proportion of the samples will have less than 90% of the deliveries arriving before 10:30 the following morning?

## Calculate the price of your order

550 words
We'll send you the first draft for approval by September 11, 2018 at 10:52 AM
Total price:
\$26
The price is based on these factors:
Number of pages
Urgency
Basic features
• Free title page and bibliography
• Unlimited revisions
• Plagiarism-free guarantee
• Money-back guarantee
On-demand options
• Writer’s samples
• Part-by-part delivery
• Overnight delivery
• Copies of used sources
Paper format
• 275 words per page
• 12 pt Arial/Times New Roman
• Double line spacing
• Any citation style (APA, MLA, Chicago/Turabian, Harvard)

# Our guarantees

Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.

### Money-back guarantee

You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.

### Zero-plagiarism guarantee

Each paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.

### Free-revision policy

Thanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.