# construct a confidence interval estimate of the mean head

1. Construct a confidence interval estimate of the mean head circumference of babies that are 2 months old.  Random sample of 100 babies shows a mean circumference of 40.6cm.  The standard deviation is 1.6cm.  Find a 95 % confidence interval estimate for the mean circumference.  Is there an aspect of the question that is not realistic?

2. A hospital study is completed regarding victims who wore seatbelts.  20 random cases have a symmetric distribution and bell shaped with the mean \$9004 and a standard deviation of \$5629.  Construct a 99% confidence interval for all costs.

For Question Numbers 3, 4 and 5:

State the Null Hypothesis and the Alternative Hypothesis.

Determine the test statistic and P value.

Make a decision regarding the hypothesis based on the P-value and the Level of Significance.

3. Survey found 75% of restaurant employees stated job stress had a negative impact on personal live.  Sample of 100 employees find 68% answered ‘Yes’ when asked the same question.  Is this a valid reason to think that the proportion of all employees of this chain would say ‘Yes’ differs from the national proportion.  Use a 5% level of significance.

4.  A sample of 54 bears has a mean weight of 182.9lbs.  The standard deviation is 121.8lbs. Use a 0.05 level of significance to test the claim the population mean of all bear weights is less than 200lbs.

5. Testing the claim that the mean birth weight for all male babies of mothers given vitamins is equal to 3.39kg, which is the mean weight of the population for all male babies, a sample of 16 babies had a mean of 3.675kg and a standard deviation of 0.657. Based on these results, does the vitamin supplement appear to have any effect on the mean birth weight? Use the 0.01 level of significance.

Calculate the price
Pages (550 words)
\$0.00
*Price with a welcome 15% discount applied.
Pro tip: If you want to save more money and pay the lowest price, you need to set a more extended deadline.
We know how difficult it is to be a student these days. That's why our prices are one of the most affordable on the market, and there are no hidden fees.

Instead, we offer bonuses, discounts, and free services to make your experience outstanding.
How it works
Receive a 100% original paper that will pass Turnitin from a top essay writing service
step 1
Fill out the order form and provide paper details. You can even attach screenshots or add additional instructions later. If something is not clear or missing, the writer will contact you for clarification.
Pro service tips
How to get the most out of your experience with Australia Assessments
One writer throughout the entire course
If you like the writer, you can hire them again. Just copy & paste their ID on the order form ("Preferred Writer's ID" field). This way, your vocabulary will be uniform, and the writer will be aware of your needs.
The same paper from different writers
You can order essay or any other work from two different writers to choose the best one or give another version to a friend. This can be done through the add-on "Same paper from another writer."
Copy of sources used by the writer
Our college essay writers work with ScienceDirect and other databases. They can send you articles or materials used in PDF or through screenshots. Just tick the "Copy of sources" field on the order form.
Testimonials
See why 20k+ students have chosen us as their sole writing assistance provider
Check out the latest reviews and opinions submitted by real customers worldwide and make an informed decision.
Military
Good job
Customer 456821, May 13th, 2022
Cybersecurity Management and Policy
Thank you to the writer for the near perfect revision and a HUGE thank you to customer support for staying in constant communication with me to ensure the assignment was completed to my specifications.
Customer 452455, January 26th, 2023
Home Repair & Home Maintenance
Well researched paper
Customer 463473, November 4th, 2022
ENG 111
looks very good
Customer 464369, June 25th, 2023
Military
Good job
Customer 456821, November 13th, 2022
SEO
Good job
Customer 463647, February 28th, 2023
IT
A few mistakes but overall an excellent paper
Customer 453915, September 13th, 2022
Although my order was not delivered at my requested time due to issues with email, the material received was great.
Customer 454605, June 19th, 2020
Military
Excellent job
Customer 456821, November 30th, 2022
Criminal Justice
Thank You!
Customer 460569, November 23rd, 2021
Marketing
I like the work.
Customer 463095, June 22nd, 2022
Nursing
Thank you so much for the great paper!
Customer 454007, May 31st, 2020
11,595
Customer reviews in total
96%
Current satisfaction rate
3 pages
Average paper length
37%
Customers referred by a friend