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The manager of The Cheesecake Factory in Boston reports that on six randomly selected weekdays, the number of customers served was 175, 125, 180, 220, 240, and 245. She believes that the number of customers served on weekdays follows a normal distribution. Construct an 99% confidence interval of the average number of customers served on weekdays.
It costs ABC $0.5 per pound to ship the box containing the weights. Because it's an odd-shaped package, though, shipping the bar costs $0.6 per pound plus a $10 surcharge. Find the mean and standard deviation of the company's total cost for shippi..
Explain these results to a person who understands the t test for a single sample but knows nothing about the t test for independent means.
Probability of a flush. Poker player holds flush when all 5 cards in hand belong to same suit (clubs, diamonds, hearts, or spades).
For which of given variables must a "two tail" t-test be applied?
Make a decision regarding the null hypothesis based on the sample information. Interpret the results of the test and state your conclusion.
Find out the best predicted household size given that the household discards 5.00 lb of plastic.
Determine z score corresponding to minimum height requirement and determine z score corresponding to maximum height requirement.
What advantage does correlation have over a cross-tab?
Bougainvilleas, mean growth rate was 2.23 inches/week and sample standard deviation was 0.77 inches/week. Determine a 90% confidence interval for mean growth rate of all Bougainvilleas.
One person's file is chosen at random. Find out probability that selected person will fall into following categories. Book keeping.
Suppose that you are conducting a survey of customer satisfaction regarding their cellular phone. If you called 11 households selected at random, what is the probability that:
Which of the following is true about the random variables X, Y, and Z?
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