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For the following claim, find the null and alternative hypotheses, test statistic, P-value, critical value and draw a conclusion. Assume that a simple random sample has been selected from a normally distributed population.
Claim: The mean IQ score of statistics professors is greater than 130.
Sample data: n = 12, mean = 134, s= 10. The significance level is a = 0.05.
a. Choose the correct null hypotheses (H0) and alternative hypothesis (H1).
Suppose both the Repair record 1978 and Company headquarters are believed to be significant in explaining the vector (Price, Mileage, Weight). Here, because of the limited sample s
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In 120 tosses of a coin, 45 heads and 75 tails are observed. Is this a balanced coin? Use a=0.05. (Follow the basic steps of hypothesis testing)
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