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A radio station in Myrtle Beach announced that at least 90% of the hotels and motels would be full for the Memorial Day weekend. The station advised listeners to make reservations in advance if they planned to be in the resort over the weekend. On Saturday night a sample of 58 hotels and motels showed 49 with a no-vacancy sign and 9 with vacancies. What is your reaction to the radio station's claim after seeing the sample evidence? Use α=.05 in making the statistical test. What is the p-value?
4. Although most of us buy milk by the quart or half gallon, farmers measure daily production in pounds. Ayreshire cows average 47 pounds of milk a day with a standard deviation of 6 pounds. For Jersey cows, the mean daily production is 43 pounds wit..
Refer to Table 7.27 in Chapter 7 with opinion about premarital sex as the response variable. Use a process (such as backward elimination) or criterion (such as AIC) to select a model. Interpret the parameter estimates for that model.
For the horseshoe crab data, use a stepwise procedure to select a model for the probability of a satellite when weight, spine condition, and color (nominal scale) are the predictors. Explain each step of the process.
At a large university, a mathematics placement exam is administered to all students. Samples of 36 male and 30 females are randomly selected from this year's student body and the following scores recorded.
the kenmont carbide company has two machines that produce a certain product. machine 1 produces 40 of the product and
Assume that causes of heart failure between individuals are independent. What is the probability that three individuals have conditions caused by outside factors?
Construct a 99% confidence interval estimate for the population mean amount of paint included in a 1-gallon can.
Let X be a random variable of the continuous type that has pdf f(x). If m is the unique median of the distribution of X and b is a real constant, show that E(X - bl) = E(X - ml) + 2 [(b - x)f(x) £lx, provided that the expectations exist.
The normal model N (58, 21) describes the distribution of weights of chicken eggs in grams. Suppose that the weight of a randomly selected chicken egg has a z score of 1.78. What is the weight of this egg in grams? Round to the nearest hundredt..
a large manufacturing firm tests job applicants who recently graduated from college. the test scores are normally
Charmers' Candy Store sells wrapped hard candies in the following flavors: strawberry, blueberry, lemon, lime, and orange. They advertise that there are equal proportions of each flavor in every size of their candy boxes.
Difference between the discrete and the continuous random variable.
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