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27 October, 13:49

A newspaper report claims that 30% of all tea-drinkers prefer green tea to black tea. Dr. Huber is the office manager at a company with thousands of employees. He wonders if the newspaper's claim holds true at his company. To find out, Dr. Huber asks a simple random sample of 125 tea-drinking employees which the prefer: green tea of black tea. Here's Dr. Huber's null hypothesis: H_0 : The proportion of all tea-drinkers at the company that prefer green tea to black tea is ...

What is an appropriate way for Dr. Huber to finish his null hypothesis?

A ... equal to 30%

B ... less than 30%

C ... greater than 30%

D ... not equal to 30%

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Answers (1)
  1. 27 October, 16:38
    0
    A ... equal to 30%

    Step-by-step explanation:

    A null hypothesis will try to say that there is no statistical significance between two variables and the researcher will try to disapprove it.

    In this case, Dr, Huber will try to disapprove that 30% of all tea-drinkers prefer green tea to black tea.

    H₀:p=30% where p is the proportion of all tea-drinkers prefer green tea to black tea.
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