METHODS OF DATA ANALYSIS
PARAMETRIC AND NON PARAMETRIC TESTS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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muscle strength was measured on the right and left hands of a random sample of 15 left-handed men and the difference (left-right) was found. The alternative hypothesis is one-sided (left hand stronger). The resulting t-statistic was 1.80.
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Df = 14, the null hypothesis can be rejected.
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Df = 14, the null hypothesis cannot be rejected.
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Df = 28, the null hypothesis can be rejected.
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Df = 28, the null hypothesis cannot be rejected.
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Explanation:
Detailed explanation-1: -The correct answer is d) The number of nightmares you have is not affected by eating cheese before bed. This is because the null hypothesis is the opposite of the alternative hypothesis and so usually states that an effect is absent.
Detailed explanation-2: -In a test of hypothesis, the null hypothesis is that the population mean is equal to 90 and the alternative hypothesis is that the population mean is not equal to 90.
There is 1 question to complete.