RESEARCH METHODOLOGY

REPORTING AND THESIS WRITING

NULL HYPOTHESIS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
You perform a sample test and the test showed that t-value is greater than the critical value. What do you do?
A
Fail to reject the null hypothesis and the difference in test is not significant
B
Fail to reject the null hypothesis and the difference in test is significant
C
Reject the null hypothesis and the difference in test is not significant
D
Reject the null hypothesis and the difference in test is significant
Explanation: 

Detailed explanation-1: -If the test statistic is more extreme than the critical value, the null hypothesis is rejected. If the test statistic is not as extreme as the critical value, the null hypothesis is not rejected.

Detailed explanation-2: -Find the critical value of t in the t table. Determine if the (absolute) t value is greater than the critical value of t. Reject the null hypothesis if the sample’s t value is greater than the critical value of t. Otherwise, don’t reject the null hypothesis.

Detailed explanation-3: -A one-tailed test is a statistical test in which the critical area of a distribution is one-sided so that it is either greater than or less than a certain value, but not both.

Detailed explanation-4: -A t-test is a statistical test that compares the means of two samples. It is used in hypothesis testing, with a null hypothesis that the difference in group means is zero and an alternate hypothesis that the difference in group means is different from zero.

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