Question Details

[answered] Lab 4 ______________________ Name: Tuesday, November 15th 1


Can I get some to help me with Statistics. I really need help I have a lab assignment to do and I don't know how


Lab 4

 

______________________ Name: Due: Tuesday, November 15th

 

1. In a sample of 60 students, the mean GPA was found to be 2.7 grade point

 

units. Assume the population standard deviation is 0.4 grade point units.

 

Construct a 90% confidence interval for the population mean GPA. 2. A forester wishes to estimate the average number of ?count trees? per acre

 

(trees larger than a specified size) on a 2000-acre plantation. She can then

 

use this information to determine the total timber volume for trees in the

 

plantation. A random sample of 50 1-acre plots are selected and examined.

 

The average number of count trees per acre is found to be 27.3, with a

 

standard deviation of 12.1.

 

a. Use this information to construct a 99% confidence interval for ?, the

 

mean number of count trees per acre for the entire plantation. b. Give a non-statistical jargon interpretation of the confidence interval. 3. A massive multistate outbreak of food-borne illness was attributed to

 

Salmonella. Epidemiologists determined that the source of the illness was ice

 

cream. They sampled nine production runs from the company that produced

 

the ice cream to determine the level of Salmonella in the ice cream. These

 

levels are as follows:

 

0.593 0.142 0.329 0.691 0.231 0.793 0.519 0.392 0.418

 

a. Find the sample mean and standard deviation. b. Get a 95% confidence interval for the true mean level of Salmonella in

 

the ice cream. 4. In a recent survey of 750 people, 600 people claimed to watch football.

 

Construct a 95% confidence interval for the population proportion of people

 

who watch football. 5. An insurance company is concerned about the number of worker

 

compensation claims based on back injuries by baggers in grocery stores.

 

They want to evaluate the fitness of baggers at the many grocery stores they

 

insure. The workers selected for the study will be evaluated to determine the

 

amount of weight that they can lift without undue back stress. From studies

 

by other insurance companies the standard deviation was found to be 25

 

pounds. How many baggers must be included in the study to be 95%

 

confident that the mean weight lifted is estimated to within 8 pounds?

 


Solution details:
STATUS
Answered
QUALITY
Approved
ANSWER RATING

This question was answered on: Sep 18, 2020

PRICE: $15

Solution~0001013014.zip (25.37 KB)

Buy this answer for only: $15

This attachment is locked

We have a ready expert answer for this paper which you can use for in-depth understanding, research editing or paraphrasing. You can buy it or order for a fresh, original and plagiarism-free copy from our tutoring website www.aceyourhomework.com (Deadline assured. Flexible pricing. TurnItIn Report provided)

Pay using PayPal (No PayPal account Required) or your credit card . All your purchases are securely protected by .
SiteLock

About this Question

STATUS

Answered

QUALITY

Approved

DATE ANSWERED

Sep 18, 2020

EXPERT

Tutor

ANSWER RATING

GET INSTANT HELP/h4>

We have top-notch tutors who can do your essay/homework for you at a reasonable cost and then you can simply use that essay as a template to build your own arguments.

You can also use these solutions:

  • As a reference for in-depth understanding of the subject.
  • As a source of ideas / reasoning for your own research (if properly referenced)
  • For editing and paraphrasing (check your institution's definition of plagiarism and recommended paraphrase).
This we believe is a better way of understanding a problem and makes use of the efficiency of time of the student.

NEW ASSIGNMENT HELP?

Order New Solution. Quick Turnaround

Click on the button below in order to Order for a New, Original and High-Quality Essay Solutions. New orders are original solutions and precise to your writing instruction requirements. Place a New Order using the button below.

WE GUARANTEE, THAT YOUR PAPER WILL BE WRITTEN FROM SCRATCH AND WITHIN YOUR SET DEADLINE.

Order Now