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Question: The MacBurger restaurant chain claims that the waiting time of customers for service is normally distributed, with a mean of 3 minutes and a standard deviation of 1 minute. The quality control department found in a sample of 50 customers at the Warren Road MacBurger that the mean waiting time was 2.75 minutes. Can we conclude that the mean waiting time is less than 3 minutes?
Use = .05.
a. State the null hypothesis and the alternative hypothesis.
b. State the decision rule.
c. Compute the value of the test statistic.
d. What is your decision regarding H0?
e. What is the p-value? Interpret it.
True or False? Bivariate correlation coefficient always has same sign as b 1 in Y = b 0 + b 1 X.
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A digital camcorder repair service has set a goal not to exceed an average of 5 working days from the time the unit is brought in to the time repairs are completed. A random sample of 12 repair records showed the following repair (in days)
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questiondo problem at the end of the text book.nbsp there are two sets of test scores titled part 1 and part 2.nbsp the
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