RESEARCH METHODOLOGY

REPORTING AND THESIS WRITING

NULL HYPOTHESIS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Do cats care about the color of their food? The null hypothesis is cats express no food preference based on color. Sample survey was perform and got the t-value of the sample is 2.305 and the critival value is 1.672.
A
The null hypothesis can be rejected and the difference in performance is significant with 90% confidence.
B
The null hypothesis cannot be rejected and the difference in performance is significant with 90% confidence.
C
The null hypothesis can be rejected and the difference in not performance is significant with 90% confidence.
D
The null hypothesis cannot be rejected and the difference in performance is not significant with 90% confidence.
Explanation: 

Detailed explanation-1: -If the sample data equals the null hypothesis precisely, the t-test produces a t-value of 0. As the sample data become progressively dissimilar from the null hypothesis, the absolute value of the t-value increases.

Detailed explanation-2: -To determine whether to reject the null hypothesis using the t-value, compare the t-value to the critical value. If the absolute value of the t-value is greater than the critical value, you reject the null hypothesis.

Detailed explanation-3: -The null hypothesis states that there is no relationship between two population parameters, i.e., an independent variable and a dependent variable. If the hypothesis shows a relationship between the two parameters, the outcome could be due to an experimental or sampling error.

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