Homework Answers
3)
| Individual | After | Before | d = After - Before |
| 1 | 92 | 86 | 6 |
| 2 | 86 | 88 | -2 |
| 3 | 89 | 84 | 5 |
| 4 | 95 | 90 | 5 |
| 5 | 93 | 85 | 8 |
| 6 | 88 | 90 | -2 |
| 7 | 97 | 91 | 6 |
| total = 26 |
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ECON 3789 Assignment 2 Name: 3. Test scores. A test on world history was given to a group of indi...
ECON 3789 Assignment 2 Name: 4. Diets. A dietician wants to see if there is any...
ECON 3789 Assignment 2 Name: 4. Diets. A dietician wants to see if there is any difference in the effectiveness of three diets. Eighteen people were randomly chosen for the test. Then each individual was randomly assigned to one of the three diets The data in the Assignment 2 Excel data file under the Diets tab give the total amount of weight losts in six months by each person. Use a 0s level of significance to conduct the hypothesis test...
Your name Spring 2019/ECON 3789/Assignment 1 n:7 ANOVA Source MS lue .0103 Regression 2,133.3333 H 1...
Your name Spring 2019/ECON 3789/Assignment 1 n:7 ANOVA Source MS lue .0103 Regression 2,133.3333 H 1 2,133.3333 16.00 Residual 666.6667 (n)5 133.3333 n- Regression output b Confidence interral Variables Coefficients std error tdf 3)p-value 9596 lower 9596 upper Intercept 63.3333 7.9682 7.948 .0005 42.8505 83.8162 Advertising 6.6667 1.6667 4.000 .0103 Problem 4. A local grocery store wants to predict its daily sales in dollars. The manager believes that the amount of newspaper advertising significantly affects sales. She randomly selects 7...
Othods in Psychological Research PSYCH248 Dr Dunn Spring 2019 andra Computer Assignment #2 Compar...
othods in Psychological Research PSYCH248 Dr Dunn Spring 2019 andra Computer Assignment #2 Comparing means using ttests This assignment will give research designs that all use SPSS to test the hypothesis, and you practice choosing the appropriate test statistic to use for different involve comparing means using t-tests. You will need to enter the data, means the samples differed significantly. To run all 3 -Hests use ANALYZE, COMPARE MEANS, then select the type of test and the variables. Problem 1:...
this is a single sample t test problem this is math Assignment #11 Single Sample t-Test...
this is a single sample t test problem
this is math
Assignment #11 Single Sample t-Test What factor determines whether you should use a z-test or a t-test statistic for a hypothesis test? 11.1 A sample is selected from a population mean of u 30. A treatment is administered to the individuals in the sample and, after treatment, the sample mean found to be M 11.2 = 31.3 with a sample variance of s2 9 If the sample consists of...
Step 1 of 5:State the null and alternative hypotheses for the test. Step 2 of 5:...
Step 1 of 5:State the null and alternative hypotheses for the
test.
Step 2 of 5: Find the value of the standard deviation of the
paired differences. Round your answer to two decimal places.
Step 3 of 5:Compute the value of the test statistic. Round your
answer to three decimal places.
Step 4 of 5: Find the p-value for the hypothesis test. Round
your answer to four decimal places.
Step 5 of 5: Draw a conclusion for the hypothesis test....
Step 1 of 5:State the null and alternative hypotheses for the test. Step 2 of 5:...
Step 1 of 5:State the null and alternative hypotheses for the
test.
Step 2 of 5: Find the value of the standard deviation of the
paired differences. Round your answer to two decimal places.
Step 3 of 5:Compute the value of the test statistic. Round your
answer to three decimal places.
Step 4 of 5: Find the p-value for the hypothesis test. Round
your answer to four decimal places.
Step 5 of 5: Draw a conclusion for the hypothesis test....
Step 1 of 5:State the null and alternative hypotheses for the test. Step 2 of 5:...
Step 1 of 5:State the null and alternative hypotheses for the
test.
Step 2 of 5: Find the value of the standard deviation of the
paired differences. Round your answer to two decimal places.
Step 3 of 5:Compute the value of the test statistic. Round your
answer to three decimal places.
Step 4 of 5: Find the p-value for the hypothesis test. Round
your answer to four decimal places.
Step 5 of 5: Draw a conclusion for the hypothesis test....
A school counselor in a high school would like to try out a new conflict-resolution program...
A school counselor in a high school would like to try out a new conflict-resolution program to change aggressiveness in students. She first surveyed 16 students using a 20-item instrument to measure their levels of aggression (on a scale of 0 to 10, with higher numbers meaning higher aggression levels). One month after the conflict resolution program was implemented, the students were given the same survey. The data are listed in the table below. The school counselor/researcher has set the...
An SAT prep course claims to improve the test score of students. The table below shows...
An SAT prep course claims to improve the test score of students. The table below shows the scores for seven students the first two times they took the verbal SAT. Before taking the SAT for the second time, each student took a course to try to improve his or her verbal SAT scores. Do these results support the claim that the SAT prep course improves the students' verbal SAT scores? Let d = (verbal SAT scores prior to taking the...
step 1 - set of hypotheses step 2 - significance level step 3 - test statistic...
step 1 - set of hypotheses
step 2 - significance level
step 3 - test statistic and distribution (including degrees of
freedom)
step 4 - rejection region (in words)
step 5 - statistical conclusion
step 6 - managerial conclusion
A toy manufacturer has developed a new toy and now wants to know if the toy should be positioned in the marketplace as a toy for boys or for girls. In order to answer this research question, one of your colleagues...
ECON 3789 Assignment 2 Name: 4. Diets. A dietician wants to see if there is any difference in the effectiveness of three diets. Eighteen people were randomly chosen for the test. Then each individual was randomly assigned to one of the three diets The data in the Assignment 2 Excel data file under the Diets tab give the total amount of weight losts in six months by each person. Use a 0s level of significance to conduct the hypothesis test...
Your name Spring 2019/ECON 3789/Assignment 1 n:7 ANOVA Source MS lue .0103 Regression 2,133.3333 H 1 2,133.3333 16.00 Residual 666.6667 (n)5 133.3333 n- Regression output b Confidence interral Variables Coefficients std error tdf 3)p-value 9596 lower 9596 upper Intercept 63.3333 7.9682 7.948 .0005 42.8505 83.8162 Advertising 6.6667 1.6667 4.000 .0103 Problem 4. A local grocery store wants to predict its daily sales in dollars. The manager believes that the amount of newspaper advertising significantly affects sales. She randomly selects 7...
othods in Psychological Research PSYCH248 Dr Dunn Spring 2019 andra Computer Assignment #2 Comparing means using ttests This assignment will give research designs that all use SPSS to test the hypothesis, and you practice choosing the appropriate test statistic to use for different involve comparing means using t-tests. You will need to enter the data, means the samples differed significantly. To run all 3 -Hests use ANALYZE, COMPARE MEANS, then select the type of test and the variables. Problem 1:...
this is a single sample t test problem
this is math
Assignment #11 Single Sample t-Test What factor determines whether you should use a z-test or a t-test statistic for a hypothesis test? 11.1 A sample is selected from a population mean of u 30. A treatment is administered to the individuals in the sample and, after treatment, the sample mean found to be M 11.2 = 31.3 with a sample variance of s2 9 If the sample consists of...
Step 1 of 5:State the null and alternative hypotheses for the
test.
Step 2 of 5: Find the value of the standard deviation of the
paired differences. Round your answer to two decimal places.
Step 3 of 5:Compute the value of the test statistic. Round your
answer to three decimal places.
Step 4 of 5: Find the p-value for the hypothesis test. Round
your answer to four decimal places.
Step 5 of 5: Draw a conclusion for the hypothesis test....
Step 1 of 5:State the null and alternative hypotheses for the
test.
Step 2 of 5: Find the value of the standard deviation of the
paired differences. Round your answer to two decimal places.
Step 3 of 5:Compute the value of the test statistic. Round your
answer to three decimal places.
Step 4 of 5: Find the p-value for the hypothesis test. Round
your answer to four decimal places.
Step 5 of 5: Draw a conclusion for the hypothesis test....
Step 1 of 5:State the null and alternative hypotheses for the
test.
Step 2 of 5: Find the value of the standard deviation of the
paired differences. Round your answer to two decimal places.
Step 3 of 5:Compute the value of the test statistic. Round your
answer to three decimal places.
Step 4 of 5: Find the p-value for the hypothesis test. Round
your answer to four decimal places.
Step 5 of 5: Draw a conclusion for the hypothesis test....
An SAT prep course claims to improve the test score of students. The table below shows the scores for seven students the first two times they took the verbal SAT. Before taking the SAT for the second time, each student took a course to try to improve his or her verbal SAT scores. Do these results support the claim that the SAT prep course improves the students' verbal SAT scores? Let d = (verbal SAT scores prior to taking the...
step 1 - set of hypotheses
step 2 - significance level
step 3 - test statistic and distribution (including degrees of
freedom)
step 4 - rejection region (in words)
step 5 - statistical conclusion
step 6 - managerial conclusion
A toy manufacturer has developed a new toy and now wants to know if the toy should be positioned in the marketplace as a toy for boys or for girls. In order to answer this research question, one of your colleagues...
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