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A banks loan officer rates applicants for credit. The ratings are normally distributed with a mean of 200 and a standard deviation of 50. If an applicant is randomly selected, find the probability of a rating that is between 225 and 275.
The weights of domestic, adult cats are normally distributed with a mean of 10.42 pounds and a standard deviation of 0.87 pounds. A cat food manufacturer sells three types of foods for underweight, normal, and overweight cats.
A sample of 350 hats is selected and the sample mean is 3.25 pounds. Using a level of significance of .10, is there evidence that the population mean weight of the hats is greater than 3.5 pounds? Fully explain your answer.
In a sample of 700 gas stations, the mean price for regular gasoline at the pump was $ 2.806 per gallon and the standard deviation was $0.008 per gallon.
a student organization wants to start a nightclub for students under the age of 21. to assess support for this proposal
1. A distribution of scores is normally distributedwith a mean??= 85and a standard deviation s=4. If one score is randomly sampled fromthe distribution, what is the probability that itwill be greater than 96, between 90 and 97 and less than 88?
question a local tire dealer wants to predict the number of tires sold each month. he believes that the number of tires
A random sample of 1001 University of California faculty members taken in December 1995 was asked, "Do you favor or oppose using race, religion, sex, color.
50524846325147205349the following random sample of annual salaries was recorded. units are in thousands of dollars.
Determines the sample mean outer diameter to be 1.002 inches with a standard deviation of 0.003 inch. Calculate the process capability index for this example.
Students at a major university are complaining of a serious housing crunch
according to the census bureau 68 of americans owned their own homes in 2003. a local real estate office wants to see
the diameter of a shaft is normally distributed with mean 0.2508 inch and standard deviation of 0.0008 inch. the
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