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. The null and the alternative hypotheses are given below The mean test seore of the sample students is H us80 lesser than or cqual to 80 The mean test score of the sample students H 80 is greater than 80 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 " test," but the specific ftest used. One sample t-test is used to test whether the population mean differs significantly from the hypothesized value. In this case the hypothesized value is 80. By using the sample data the population mean is tested. Hence, one sample t-test is 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 statep and whether Ho is rejected.) The corresponding p-value for the test statistic 1.98 at 14 degrees of freedom is 0.033 and it is calculated by using excel software: Decision rule: Reject the null hypothesis (Ho) when the caleulated p-value of the test statistic is lesser than the level of significance a. Conclusion Since the obtained p value for the test statistic 0.033 is less than the level of significance (a-0.05), the null hypothesis is rejected and concluded that the new study skills program have significantly higher test scores than the national average 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.

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. The null and the alternative hypotheses are given below The mean test seore of the sample students is H us80 lesser than or cqual to 80 The mean test score of the sample students H 80 is greater than 80 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 " test," but the specific ftest used. One sample t-test is used to test whether the population mean differs significantly from the hypothesized value. In this case the hypothesized value is 80. By using the sample data the population mean is tested. Hence, one sample t-test is 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 statep and whether Ho is rejected.) The corresponding p-value for the test statistic 1.98 at 14 degrees of freedom is 0.033 and it is calculated by using excel software: Decision rule: Reject the null hypothesis (Ho) when the caleulated p-value of the test statistic is lesser than the level of significance a. Conclusion Since the obtained p value for the test statistic 0.033 is less than the level of significance (a-0.05), the null hypothesis is rejected and concluded that the new study skills program have significantly higher test scores than the national average 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.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.3: Measures Of Spread

Problem 1GP

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I have attached a picture of the question. Please answer section D and E only which are the questions below.

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.

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.
The null and the alternative hypotheses are given below
The mean test seore of the sample students is
H us80
lesser than or cqual to 80
The mean test score of the sample students
H 80
is greater than 80
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 " test," but the specific ftest used.
One sample t-test is used to test whether the population mean differs significantly from the
hypothesized value. In this case the hypothesized value is 80. By using the sample data the
population mean is tested. Hence, one sample t-test is 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 statep and whether Ho is
rejected.)
The corresponding p-value for the test statistic 1.98 at 14 degrees of freedom is 0.033 and it
is calculated by using excel software:
Decision rule:
Reject the null hypothesis (Ho) when the caleulated p-value of the test statistic is lesser
than the level of significance a.
Conclusion
Since the obtained p value for the test statistic 0.033 is less than the level of significance
(a-0.05), the null hypothesis is rejected and concluded that the new study skills program
have significantly higher test scores than the national average
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.

Definition Definition Measure of central tendency that is the average of a given data set. The mean value is evaluated as the quotient of the sum of all observations by the sample size. The mean, in contrast to a median, is affected by extreme values. Very large or very small values can distract the mean from the center of the data. Arithmetic mean: The most common type of mean is the arithmetic mean. It is evaluated using the formula: μ = 1 N ∑ i = 1 N x i Other types of means are the geometric mean, logarithmic mean, and harmonic mean. Geometric mean: The nth root of the product of n observations from a data set is defined as the geometric mean of the set: G = x 1 x 2 ... x n n Logarithmic mean: The difference of the natural logarithms of the two numbers, divided by the difference between the numbers is the logarithmic mean of the two numbers. The logarithmic mean is used particularly in heat transfer and mass transfer. ln x 2 − ln x 1 x 2 − x 1 Harmonic mean: The inverse of the arithmetic mean of the inverses of all the numbers in a data set is the harmonic mean of the data. 1 1 x 1 + 1 x 2 + ...

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