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1. A population consists of the following N = 5 scores: 0, 6, 4, 3, and 12.
a. Compute µ and s for the population.
b. Find the z-score for each score in the population.
c. Transform the original population into a new population of N =5 scores with a mean of µ = 100 and a standard deviation of s = 20.
Cans of Paint Purchased During a recent paint sale at Corner Hardware, the number of cans of paint purchased was distributed as shown. Find the mean, variance, and standard deviation of the distribution.
Standard deviation of $5,000. What is the lowest salary for those individuals with an MBA degree whose starting salary is in the top 10 percent?
If a group of 81 children is selected at random, what is the probability that the average time these children watch television is more than 3.5 hours a day?
In a sample batch of 46 mechanical pencils it is assumed that 18 are defective. If 5 mechanical pencils are randomly selected, what is the probability that none of them are defective?
the claim size for a certain insurance policy is a pareto random variable with density function . the parameter is
The American Bankers Association collects data on the use of credit cards, debit cards, personal checks, and cash when consumers pay for in-store purchases (The Wall Street Journal, December 16, 2003). In 1999, the following usages were reported.
Show the decision rule graphically. Use the .05 significance level.
americans have become increasingly concerned about the rising cost of medicare. in 1990 the average annual medicare
the effectiveness of treating respiratory infections with herbal remedies was studied. days of fever was used to
Compute the probability of exactly 0,1,2,3,4, and 5 arrivals per day.
What is the probability that someone selected at random will score 81 or lower and what percentage of all trainees will score between 60 and 75?
Suppose that the proportion of statistics students who are sophomores is 20%. We take a random sample of 10 statistics students. Use the binomial formula to find the probability that the sample contains exactly 2 sophomores.
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