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Two Sample Test of Hypothesis 1. Mary Jo is the Vice ...

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Two Sample Test of Hypothesis

1.     Mary Jo is the Vice President of Nursing services at St. Luke's Memorial Hospital. Recently she noticed that in the job postings for nurses that those that are unionized seem to offer higher wages. She decided to investigate and gathered the following sample information.

Group     Mean Wage     Sample Std Deviation     Sample Size
Union         $20.75                 $2.25                        40
Nonunion $19.80                  $1.90                       ; 45

Would it be reasonable for her to conclude that union nurses earn more? Use the .02 significance level.
Submitted: 7 years ago.
Category: Homework
Customer: replied 7 years ago.
Relist: No answer yet.
Two Sample Test of Hypothesis

Mary Jo is the Vice President of Nursing services at St. Luke’s Memorial Hospital. Recently she noticed that in the job postings for nurses that those that are unionized seem to offer higher wages. She decided to investigate and gathered the following sample information.

Group     Mean Wage     Sample Std Deviation     Sample Size
Union      $20.75                 $2.25     40
Nonunion $19.80                 $1.90     45

Would it be reasonable for her to conclude that union nurses earn more? Use the .02 significance level.
Expert:  Dolly replied 7 years ago.

 

Which textbook are you using?

 

Customer: replied 7 years ago.
Lind, et al Statistical Techniques in Business & Economics 12/e
Customer: replied 7 years ago.
Dolly why are you asking? Is there a way to understand this class?
Expert:  Dolly replied 7 years ago.

 

You have to make your own brief notes as you go along. Your notes need to contain the equations with a written note about when that equation is used. I have your text and can offer you assistance. In my estimation, statistics is one of the more difficult subjects to understand in the business curriculum.

SOLUTION

 

Customer: replied 7 years ago.
The end of this week is Chapter 12 and 16, Week 4 is Chapter 13.
Expert:  Dolly replied 7 years ago.
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Customer: replied 7 years ago.
Analysis of Variance
Problem: Susan Sound predicts that students will learn most effectively with a constant background sound, as opposed to an unpredictable sound or no sound at all. She randomly divides fifteen students into three groups of five. All students study a passage of text for 30 minutes. Those in group 1 study with background sound at a constant volume in the background. Those in group 2 study with noise that changes volume periodically. Those in group 3 study with not noise. After studying, all students take a 10 point multiple choice test over the material. Is Susan’s assumption correct? Assume a significance level of .05. Their scores follow:
Constant Sound     Random Sound     No sound
7     5     8
4     5     6
6     3     7
8     4     5
6     4     6

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