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The average cost of repairing a VCR is $80 with a standard deviation of 19. if one VCR is repaired, find the probability the cost is between 70 and 90.
Probability using normal distribution.Sampling distributions. Given a normal distribution with μ = 50 and standard deviation σ = 9, if a sample of n = 100 is selected.
We have been informed that the stock has gone up 20%. What is the probability of a rise or fall in the GDP?
Heights of 18-year-old men are approximately normally distributed, with mean 68 inches and standard deviation 3 inches.
At 0.01 significance level is it sensible to conclude that modification reduced number of traffic accidents?
Determine the range and standard deviation of the times.
Suppose the following statistics were calculated from data gathered from a randomized block experiment with k = 4 and b = 10:
Thirty-two samples of 8 items each were collected from a process. The average sample mean is 12 and the average range is 0.10.
Due to financial hardship, the Nyke shoe company feels they only need to make one size of shoes, regardless of gender or height. They have collected data on gender, shoe size, and height
A customer from Cavallaro's Fruit Stand picks a sample of 5 oranges at random from a crate containing 80 oranges, of which 6 are rotten. What is the probability that the sample contains 1 or more rotten oranges? (Round your answer to three decimal..
Alice and Bob agree to meet at the bus stop between 12 noon and 1pm. They each arrive at a random time in that interval and wait for 5 minutes before leaving, unless they see the other person. What is the probability that they meet each other?
Katie is studying aggression among adolescent girls. She believes that there is a relationship between the level of interaction a girl has with her mother and her level of aggression.
Locate value of the population mean in your sketch and make an estimate of the standard deviation
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