An Ohio university wishes to demonstrate that car ownership is detrimental to academic achievement. A random sample of 100 students who do not own cars had a mean GPA of 2.68 with a standard deviation of 0.6, while the same size of sample who own cars had a mean GPA of 2.55 with a standard deviation of 0.7. Can the university justify that the mean GPA for non-car owners is greater than the mean GPA for car owners at a 99% confidence?
Solution Summary
Step by step method for testing the hypothesis under 5 step approach is discussed here. Excel template for each problem is also included. This template can be used to obtain the answers of similar problems.
Independent sample t test for solar energy data. ... SS df MS F P-value F crit Sample 52635.03 1 ... The solution gives details of students t test for comparing the ...
... That is, we are testing. ... Develop the null and the alternative hypothesis. The null hypothesis tested is. ... Use the SPSS to calculate an independent-samples t test. ...
... method for the calculation of testing of hypothesis using independent sample t test. ... The test statistic used is. ... X 2 n1n2 ~ tn1 + n1 − 2 Where S = t= n1 + n2 ...
... the null and alternate hypothesis formulated for testing the difference pre and ... impact on changing total inpatient cost is the Independent Sample t-test. ...
... (a) What is the hypothesis being tested here? ... Your choices are t-test for independent samples, t-test for a single sample, or paired sample t-test. ...
... is the dependent variable and X is the independent variable, a ... Freedom 6 Pooled Variance 9.25 Difference in Sample Means -7 t Test Statistic -3.254933885. ...
...sample t-test is used for testing, when measurements are ... On the other hand, an independent sample t-test is used ... damage for an automobile was tested before and ...
... drug on Alzheimer's patients, testing a group ... the same patients are tested before and ...Independent sample t test is required, since two independent samples are ...
... Inferences About Two Means: Independent Samples Hypothesis Testing for ... Pooled Variance 11.965 Difference in Sample Means 7.9 t Test Statistic 8.074687922. ...
