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A bank's loan officer rates applicants for credit. The ratings are normally distributed with a mean of 200 and a standard deviation of 50. If 49 different applicants are randomly selected find the probability that their mean is above 215.
Is the event of choosing card green or blue on the first selection independent of choosing card green or red on the second selection? Why or why not?
Determine the typical seasonal patterns for sales using the ratio-to-moving-average method. Project the sales for 2004, and then seasonally adjust each quarter.
without regard to order in how many way can you select four individuals from a group of seven? please show
Is there evidence to suggest a difference in the mean waiting times at the four body shops? Use the .05 significance level.
Restaurateur Danny Valentine is evaluating two, sites, Raymondville and Rosenber, for his next restaurant. Denny suspects that Raymondville residents (population 1) dine out more often (number of times per month) than Rosenberg residents (populati..
The average U.S. family includes 3.13 persons. To determine whether families in her city tend to be smaller in size compared to those across the United States, a city council member selects a simple random sample of 25 families.
Standard deviation of the sampling distribution of sample proportion is 0.025. However, the report did not indicate what the sample size n was. What was it?
Bivariate data for the quantitative variables x and y are given in the attached. These data are plotted in a scatter plot. Sketch an approximation of at the least-squares regression line for the data.
Customers arrive to purchase tickets each hour. Determine the average time a ticket buyer must wait and the portion of time the ticket seller is busy.
transrail is bidding on a project that it figures will cost 400000 to perform. using a 25 markup it will charge 500000
a sample of 90 women is obtained and their heights in inches and pulse rates in beats per minute are measured. the
hono golf is a manufacturer of golf products in taiwan and china. one of the golf accessories it produces at its plant
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