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On the data key we start with 25 inmates, I need the probability of those who are in a state facility and who have legal satisfaction scores of 5 or more. There are a total of 13 inmates who are in the state facility and 9 who have legal satisfaction scores of 5 or more. How do determine the probability for this because I have come up weird numbers.
A human society claims that less than 31% of U.S. households own a dog. In a random sample of 392 U.S. households, 155 say they own a dog. At a=0.03, is there enough evidence to support the society's claim?
The manager of a Farmer Jack Super Market would like to know if there is a preference for the day of the week on which customers do their shopping.
Determine the area under the normal curve with mu = 8 and sigma = 3. If Mary gets 90 on a physics test where mean is 85 and standard deviation is 4.59, where does she stand in relation to her classmates?
Plot the control limits for the mean outside diameter and the range.
Calculate the mean difference for the following data. The scores are the number of pictures the participants remembered correctly out of 20.
Computing the expected values for the given probability distribution and evaluate the expected values of the following probability distributions
An internal study by the Technology Services department at Lahey Electronics revealed company employees receive an average of 6.0 emails per hour. Assume the arrival of these emails is approximated by the Poisson distribution.
Assume that these distributions are distributed as normal random variables with the means and standard deviations given previously. Find the probability that the return for common stocks will be greater than 8%.
What is the average monthly amount charge? What percent of monthly charges are between $600 and $ $889 What percent of monthly charges is less than $100.
Suppose that you draw a random sample of 27 cans. Find the probability that the mean weight of the sample is less than 6.19 ounces.
Statistics Questions Set: If the mean number of hours of television watched by teenagers per week is 12 with a standard deviation of 2 hours, what proportion of teenagers watch 16 to 18 hours of TV a week? (Assume a normal distribution.)
Suppose a well-known baseball player states that, at this stage of his career, he is a "300 hitter" or better. That is, he claims that he gets a hit in at least 30% of his at-bats. Over the next month of the baseball season, this player has 105 at..
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