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Twenty percent of all cars manufactured by a certain company have a defective transmission system. If a dealer has sold 200 of these cars, what is the approximate probability that it will need to service at most 50 of them?
Predict the final average of a student who made an 83 on the first test. Give the value of r and r squared for this model. Interpret the value of r squared in the context of this problem.
What does the coefficient of determination tell you about the variation attendance and the variation in the number of exhibitors?
You are running a chi-squared test. If you have 5 groups with 3 characteristics each, what would your critical value be with an alpha of .25? a . Between 0 and 3.0
1.experiments on learning in animals sometimes measure how long a laboratory rat takes to find its way through a maze.
Calculate (rounded to the nearest tenth) The correlation between IQ and Anxiety r =??
We would like to test if the proportion of respondents that support the health care bill is less than 50% (a) what kind of hypothesis test is appropriate?
Transportation officials tell us that 80% of drivers wear seat belts while driving. What is the probability that between 538 and 546 drivers in a sample of 700 drivers wear seat belts?
What is the point estimate of the population mean? Using the 95 percent level of confidence, determine the confidence interval for μ.
Find out the probability of an event relies on past history of record data. The relative frequency method of computing the probability of an event relies on past history.
Time closely follows a normal distribution with a mean of 500 seconds and a standard deviation of 72 seconds. What percent of kiosk users take between 600 and 720 seconds?
you are trying a new food recipe and the probability that a friend of yours likes that food is 0.85. if you invite 18
A store has an average of 25 people arriving each minute to checkout and each person on the average require 4 minutes to be processed at the checkout. What is the minimum number of cashiers required?
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