Question: While teaching a unit on fractions, a fifth-grade teacher does a pre-test at the beginning of the unit and a post test and the end

$While teaching a unit on fractions, a fifth-grade teacher does a$ pre-test at the beginning of the unit and a post test and

the end of the unit. She found the difference of each student's

scores (post-test - pre-test) and then finds the mean. There are 21

students in her class. The mean of the differences is 7 points,

While teaching a unit on fractions, a fifth-grade teacher does a pre-test at the beginning of the unit and a post test and the end of the unit. She found the difference of each student's scores (post-test - pre-test) and then finds the mean. There are 21 students in her class. The mean of the differences is 7 points, with a standard deviation of 3 points. The teacher wants to know if the post-test scores are different than the pre-test scores with a significance of 0.05. What is the null and alternative hypothesis? Select one: O a. Ho: /diff = 0; HA: Adiff * 0 O b. Ho: /diff = 0; HA: Adiff > 0 O c. Ho: Adiff = 0; HA: Adiff

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Mathematics Questions!

2. a) Name the type of reference tests being used in the following examples - (1) Amanda's parents were concerned about how well she was doing in biology class. When they contacted her teacher, Mr....

Please read the questions Question: Please give an examples of deficit model thinking that you see in chapter 4. Be sure to give specifics and explain how these are examples of deficit model thinking...

Please read the questions Question: Think of an asset or strength-based approaches in chapter 4. Again, be specific and explain how these are examples of asset/strength-based thinking explain why? 4...

Please read the questions Question: 1. ) Share a time when you witnessed or experienced deficit model thinking in the classroom AND/OR share an example of a time when you witnessed or experienced an...

1.A staff member at UF's Wellness Center is interested in seeing if a new stress reduction program will lower employees high systolic blood pressure levels. Twenty people are selected and have their...

1. What does the "Notice and Wonder" routine look like when used in a classroom? 2. How did the "McDonalds Prompt" lead into the rest of the lesson? 3. What are some benefits of using the Notice and...

governance model to align changing business needs with IT While the Business Monarchy and IT Monarchy archetypes delivery. represent a centralized decision making structure, Feudal archetype reflects...

Please help answer figure 2 on page 45 in attached document See Job Order Costing Material (1).pdf . Thank you!!! 39 JOB ORDER COSTING: A SIMULATION AND VEHICLE FOR CONCEPTUAL DISCUSSION Rochelle K....

Can you please complete Figure 5 on the document. 39 JOB ORDER COSTING: A SIMULATION AND VEHICLE FOR CONCEPTUAL DISCUSSION Rochelle K. Greenberg, Florida State University Arnold Schneider, Georgia...

I am struggling with the attached item. Are you able to provide some assistance and pointers? I am completing figures 2,3 & 5 39 JOB ORDER COSTING: A SIMULATION AND VEHICLE FOR CONCEPTUAL DISCUSSION...

We said in this chapter that resolution cannot be used to generate all logical consequences of a set of sentences. Can any algorithm do this?

Estimate the implied volatility of the August 165 call. Compare your answer with the one you obtained in problem 12. Use trail and error. Stop when your answer is within 0.01 of the true implied...

how long will it take 4 0 0 0 to reach 4 5 0 0 when it grows 8 percent each year

Financial data for Joel de Paris, Inc., for last year follow. Joel de Paris, Inc. Balance Sheet Beginning Balance Ending Balance $ $ Assets Cash Accounts receivable Inventory Plant and equipment net...