Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

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

image text in transcribed
image text in transcribed
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 $42,500 and a standard deviation of $8200. In County B, a random sample of 9 residents has a mean annual income of $37,900 and a standard deviation of $5600. 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 Ha. Which is the correct claim below? O A. "The mean annual incomes in Counties A and B are not equal." O B. "The mean annual income in County A is greater than in County B." O 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." What are Ho and He? The null hypothesis, Ho, is My =H2. The alternative hypothesis, Ha, is My # #2- Which hypothesis is the claim? The null hypothesis, Ho O The alternative hypothesis, Ha (b) Find the critical value(s) and identify the rejection region(s). Enter the critical value(s) below. (Type an integer or decimal rounded to three decimal places as needed. Use a comma to separate answers as needed.)

Step by Step Solution

There are 3 Steps involved in it

Step: 1

blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image

Step: 3

blur-text-image

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Precalculus A Concise Course

Authors: Ron Larson

3rd Edition

1285607171, 9781285607177

More Books

Students also viewed these Mathematics questions

Question

2. Do not get drawn into I wont, you will arguments.

Answered: 1 week ago

Question

Be relaxed at the hips

Answered: 1 week ago