A researcher is running an experiment on the effectiveness of three different en

Question

A researcher is running an experiment on the effectiveness of three different energy drinks. She randomly selects 50 individuals from the population and evenly splits them into three groups, each which consumes a different energy drink. a. The null hypothesis for this test is that at least one of the three groups will be different. True or False? [Enter the word "True" or "False"] The statistical results of the test are as follows: F(2, 47) = 6.24, p >.05. b. In the above results, degrees of freedom between has what value? c. The decision was to the null [reject/accept].

Explanation / Answer

Solution:-

1) False.

State the hypotheses. The first step is to state the null hypothesis and an alternative hypothesis.

Null hypothesis: 1 = 2 = 3

Alternative hypothesis: At-least one of the is not equal.

Formulate an analysis plan. For this analysis, the significance level is 0.05.

2) The degree of freedom betweem has 2.

D.Fnumerator = 2

D.Fdenominator = 47

3) The decision was to reject the null hypothesis.

Since p value of the test is 0.00395, which is less than significance level 0.05, Hence we have to reject the null hypothesis.

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