You wish to test the following claim (HaHa) at a significance level of α=0.05. For the context of this problem, μd=μ2−μ1 where the first data set represents a pre-test and the second data set represents a post-test.      Ho:μd=0      Ha:μd<0You believe the population of difference scores is normally distributed, but you do not know the standard deviation. You obtain pre-test and post-test samples for n=254 subjects. The average difference (post - pre) is ¯d=−2.4 with a standard deviation of the differences of sd=14.6What is the critical value for this test? (Report answer accurate to three decimal places.)critical value = What is the test statistic for this sample? (Report answer accurate to three decimal places.)test statistic =  Can you please explain how I would solve this free hand and in a TI-83 calculator please.

Question
Asked Dec 1, 2019
10 views

You wish to test the following claim (HaHa) at a significance level of α=0.05. For the context of this problem, μd=μ2−μ1 where the first data set represents a pre-test and the second data set represents a post-test.

      Ho:μd=0
      Ha:μd<0

You believe the population of difference scores is normally distributed, but you do not know the standard deviation. You obtain pre-test and post-test samples for n=254 subjects. The average difference (post - pre) is ¯d=−2.4 with a standard deviation of the differences of sd=14.6

What is the critical value for this test? (Report answer accurate to three decimal places.)
critical value = 

What is the test statistic for this sample? (Report answer accurate to three decimal places.)
test statistic = 

 

Can you please explain how I would solve this free hand and in a TI-83 calculator please.

check_circle

Expert Answer

Step 1

Here, the distribution is left tailed, the degrees of freedom is 2...

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in

Math

Statistics

Advanced Topics in Statistics

Related Statistics Q&A

Find answers to questions asked by student like you
Show more Q&A
add
question_answer

Q: find the mean, variance, and standard deviation   Twenty-one percent of U.S. employees who are late ...

A: The value of mean is 0.84, which is obtained as follows:

question_answer

Q: Kayla Greene is a team lead for an environmental group for a certain region. She is investigating wh...

A: Given data

question_answer

Q: You wish to test the following claim (HaHa) at a significance level of α=0.01. For the context of th...

A: Given significance level is 0.01.To compute paired t-test for the given dataSet up the hypotheses:

question_answer

Q: Find the margin of error for a 95% confidence interval for estimating the population mean when the s...

A: Given:Sample standard deviation = s = 90Confidence level = 0.95So, α = 1-0.95 = 0.05α/2 = 0.025   …A...

question_answer

Q: No. Date 1 Based ona study of a121 between the ages 1 and 4 researchers at the Medical college of wi...

A: Population:Population represents the list of all possible characteristics or elements of interest in...

question_answer

Q: I wwould like the solutions for parts a-d

A: Decision rule:Reject H0 if test statistic &gt; Critical value.In this case, the appropriate test is ...

question_answer

Q: randlom S Ilicit use of Psychostimulants among College stuclents surveyed cllege s.) The au+thors of...

A: Part a:In the description of the study, it is not mentioned anywhere that any probabilistic method w...

question_answer

Q: The symbol σ¯xσx¯ represents the population standard deviation of all possible sample means from sam...

A: Given statement is false statement.

question_answer

Q: Number 16

A: Given data