# OpenStax CNX

You are here: Home » Content » Hypothesis Testing of Two Means and Two Proportions: Lab I (edited: Teegarden 02)

### Recently Viewed

This feature requires Javascript to be enabled.

# Hypothesis Testing of Two Means and Two Proportions: Lab I (edited: Teegarden 02)

Module by: Mary Teegarden. E-mail the author

Summary: figure one has been updated to reflect a normal curve.

Class Time:

Name:

## Student Learning Outcomes:

• The student will select the appropriate distributions to use in each case.
• The student will conduct hypothesis tests and interpret the results.

## Increasing Stocks Survey

Look at yesterday’s newspaper business section. Conduct a hypothesis test to determine if the proportion of New York Stock Exchange (NYSE) stocks that increased is greater than the proportion of NASDAQ stocks that increased. As randomly as possible, choose 40 NYSE stocks and 32 NASDAQ stocks and input the data into a Minitab worksheet. Complete the following statements.

1. H o H o
2. H a H a
3. In words, define the Random Variable. ____________=
4. The distribution to use for the test is:
5. Calculate the test statistic using your data.
6. Draw a graph and label it appropriately. Shade the actual level of significance.
• a. Graph:
• b. Calculate the p-value:
7. Do you reject or not reject the null hypothesis? Why?
8. Write a clear conclusion using a complete sentence.

## Textbook Prices

The data in Textbook.mtw shows the price for both the new and used textbook price for books required for summer 2008 classes at Mesa College. Is it worthwhile to buy used textbooks?

1. H o H o
2. H a H a
3. In words, define the Random Variable. ____________=
4. The distribution to use for the test is:
5. Calculate the test statistic using your data.
6. Draw a graph and label it appropriately. Shade the actual level of significance.
• a. Graph:
• b. Calculate the p-value:
7. Do you reject or not reject the null hypothesis? Why?
8. Write a clear conclusion using a complete sentence.

## Shoe Survey

Test whether women have, on average, more pairs of shoes than men. Include all forms of sneakers, shoes, sandals, and boots. Use your class as the sample.

1. H o H o
2. H a H a
3. In words, define the Random Variable. ____________=
4. The distribution to use for the test is:
5. Calculate the test statistic using your data.
6. Draw a graph and label it appropriately. Shade the actual level of significance.
• a. Graph:
• b. Calculate the p-value:
7. Do you reject or not reject the null hypothesis? Why?
8. Write a clear conclusion using a complete sentence.

## Content actions

PDF | EPUB (?)

### What is an EPUB file?

EPUB is an electronic book format that can be read on a variety of mobile devices.

My Favorites (?)

'My Favorites' is a special kind of lens which you can use to bookmark modules and collections. 'My Favorites' can only be seen by you, and collections saved in 'My Favorites' can remember the last module you were on. You need an account to use 'My Favorites'.

| A lens I own (?)

#### Definition of a lens

##### Lenses

A lens is a custom view of the content in the repository. You can think of it as a fancy kind of list that will let you see content through the eyes of organizations and people you trust.

##### What is in a lens?

Lens makers point to materials (modules and collections), creating a guide that includes their own comments and descriptive tags about the content.

##### Who can create a lens?

Any individual member, a community, or a respected organization.

##### What are tags?

Tags are descriptors added by lens makers to help label content, attaching a vocabulary that is meaningful in the context of the lens.

| External bookmarks