Logo
Home Study Material Contact Search
AI Chat FREE
  1. mathematics
  2. basic math
  3. a personnel director in a particular state claims

A personnel director in a particular state claims that the mean annual income is the...

80.2K

Verified Solution

Question

Basic Math

image

A personnel director in a particular state claims that the mean annual income is the same in one of the state's counties (County A) as it is in another county (County B). In County A, a random sample of 15 residents has a mean annual income of $42,300 and a standard deviation of $8500. In County B, a random sample of 9 residents has a mean annual income of $39,600 and a standard deviation of $6000. At a=0.01, answer parts (a) through (e). Assume the population variances are not equal. Assume the samples are random and independent, and the populations are normally distributed.(a) Identify the claim and state Ho and HaWhich is the correct claim below?A. "The mean annual income in County A is greater than in County B."B. "The mean annual incomes in Counties A and B are not equal."C. "The mean annual income in County A is less than in County B."D. "The mean annual incomes in Counties A and B are equal."

Answer & Explanation Solved by verified expert
Get Answers to Unlimited Questions

Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!

Membership Benefits:
  • Unlimited Question Access with detailed Answers
  • Zin AI - 3 Million Words
  • 10 Dall-E 3 Images
  • 20 Plot Generations
  • Conversation with Dialogue Memory
  • No Ads, Ever!
  • Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!
Become a Member

Other questions asked by students

Biology
1.2K views

Which of thefollowing is aTransitionalExpression thatgives reasons?A. ConsequentlyB. FirstC. Granted that

Basic Math
1.2K views

Find the nth degree Taylor polynomial Tn for n = 0, 1, 2, and 3...

Statistics
1.2K views

In a survey of 777 homeowners with high-speed Internet, the average monthly cost of a...

Algebra
1.2K views

Use the Law of Cosines to determine the length of side x 37 15 A...

Algebra
1.2K views

Factor the polynomial or identify it as irreducible x x 20x

Accounting
1.2K views

Determine the maturity date for each of the following notes. Consider leap years where necessary.Date...

Accounting
1.2K views

a. Gastos incurridos y pagados del sitio web, $2,900. b. ...

Accounting
1.2K views

Part U67 is used in one of Broce Corporation's products. The company's Accounting Department reports...

Accounting
1.2K views

At June 30, 2022, the end of its most recent fiscal year, Bramble Computer Consultants...

Accounting
1.2K views

belance thebt on December 31, 262

Accounting
1.2K views

Calculate Lead Time Flint Fabricators Inc. machines metal parts for the automotive industry. Under the...

Accounting
1.2K views

By using direct-labor hours as an application base, which product is overcosted and which product...