4. A researcher wanted to examine the effect of a new math study skills program on secondgraders. Fifteen students took the new study skills program for six weeks and then took astandardized math exam, which is known to have a population mean score of u 80. The scoreson the exam for the 15 students (who took the study skills program) are reported belowScores on the standardized math exam for the 15 students:79, 85, 86, 75, 82, 84, 85, 81, 75, 84, 78, 90, 85, 83, 80Test to see whether the students who took the new study skills program have significantly highertest scores than the national average. Perform the appropriate test in SPSS using a .05a. State the null and alternative hypotheses belowb. What type of test should be run on the data (be specific with the exact name of the test)? Forexample, don't just state "t test," but the specific test usedc. What is the conclusion of the hypothesis test? State the p-value and the decision about thehypothesis test below(Don't write the results here that will be done in (d) below -just state p and whether Ho is rejected.)d. What is the effect size for the study? Calculate and report the effect size below. Indicate themagnitude of the effect size according to Cohen's standards and interpret what the effect sizemeans in terms of standard deviation units.e. Write the results of the test in APA format below.

Question
Asked Oct 29, 2019
1 views
4. A researcher wanted to examine the effect of a new math study skills program on second
graders. Fifteen students took the new study skills program for six weeks and then took a
standardized math exam, which is known to have a population mean score of u 80. The scores
on the exam for the 15 students (who took the study skills program) are reported below
Scores on the standardized math exam for the 15 students:
79, 85, 86, 75, 82, 84, 85, 81, 75, 84, 78, 90, 85, 83, 80
Test to see whether the students who took the new study skills program have significantly higher
test scores than the national average. Perform the appropriate test in SPSS using a .05
a. State the null and alternative hypotheses below
b. What type of test should be run on the data (be specific with the exact name of the test)? For
example, don't just state "t test," but the specific test used
c. What is the conclusion of the hypothesis test? State the p-value and the decision about the
hypothesis test below
(Don't write the results here that will be done in (d) below -just state p and whether Ho is rejected.)
d. What is the effect size for the study? Calculate and report the effect size below. Indicate the
magnitude of the effect size according to Cohen's standards and interpret what the effect size
means in terms of standard deviation units.
e. Write the results of the test in APA format below.
help_outline

Image Transcriptionclose

4. A researcher wanted to examine the effect of a new math study skills program on second graders. Fifteen students took the new study skills program for six weeks and then took a standardized math exam, which is known to have a population mean score of u 80. The scores on the exam for the 15 students (who took the study skills program) are reported below Scores on the standardized math exam for the 15 students: 79, 85, 86, 75, 82, 84, 85, 81, 75, 84, 78, 90, 85, 83, 80 Test to see whether the students who took the new study skills program have significantly higher test scores than the national average. Perform the appropriate test in SPSS using a .05 a. State the null and alternative hypotheses below b. What type of test should be run on the data (be specific with the exact name of the test)? For example, don't just state "t test," but the specific test used c. What is the conclusion of the hypothesis test? State the p-value and the decision about the hypothesis test below (Don't write the results here that will be done in (d) below -just state p and whether Ho is rejected.) d. What is the effect size for the study? Calculate and report the effect size below. Indicate the magnitude of the effect size according to Cohen's standards and interpret what the effect size means in terms of standard deviation units. e. Write the results of the test in APA format below.

fullscreen
check_circle

Expert Answer

Step 1

Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are solving the first 3 parts for you, according to our policy. If you need help with any of the other parts, please re-post the question and mention the part you want answered.

Step 2

a)

The test hypotheses are:

Null hypothesis:

H0: μ = 80.

Alternative hypothesis:

H1: μ > 80

Step 3

b)

As the population standard deviation is unknown, the sample standard deviation must be used while performing the test. Thus, the suitable test to use here is the one sample t test.

c)

Here, the sample size n is 15.

Descriptive statistics:

Step-by-step procedure to obtain the descriptive statistics using Excel:

  • In Excel sheet, enter the data of Scores in any one column.
  • In Data, Select Data Analysis and Choose...
help_outline

Image Transcriptionclose

Scores Mean 82.13333333 Standard Error 1.077327676 Median 83 Mode 85 Standard Deviation 4.172472146 Sample Variance 17.40952381 Kurtosis -0.190815079 Skewness -0.2377297 Range 15 Minimum 75 Maximum 90 Sum 1232 Count 15

fullscreen

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: A scrable players scores an average of 365 points per game with a standard deviation of 41. What is ...

A: From the given information,x (score) is the random variable that follows normal distribution with me...

question_answer

Q: skipping lunch- A nutritionist wishes to determine, within 3%, the true proportion of adults who do ...

A: It is given that margin of error (E) is 0.03 and the confidence level is 95%.

question_answer

Q: 31 Sample size 31 Sample mean 12.85 mph 7.9 mph Population standard deviation 3.3 mph 2.8 mph 2. At ...

A: It is given that mean and standard deviation are 105 and 15, respectively.

question_answer

Q: what are the appropriate numbers of participants needed for each of the folowing planned studies to ...

A: (a)The conditions for the effect size for the t test means are:If d ≤ 0.2, then the effect size is s...

question_answer

Q: Part A, B, and C

A: The provided information are:

question_answer

Q: What values of F indicate that the null hypothesis is true?

A: F-values are calculated value

question_answer

Q: 38. P(1.12 -1.43) For Exercises 41 through 46, find the z value that corre- sponds to the given are...

A: 41.It is known that in a standard normal distribution, P(Z≤0) = P(Z≥0) = 0.5.

question_answer

Q: A certain flight arrives on time 82 percent of the time. Suppose 198flights are randomly selected. U...

A: It is given that 82% of the time the flight arrives on time. Therefore, probability of a selected fl...

question_answer

Q: Need help with this problem

A: Let x is random variable.