# 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.

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Step 1

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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...

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