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How many wayss are there to select an unordered group of eight numbers between 1 and 25 inclusive with repetition? In what what fraction of these ways is the sum of these numebrs even?
What is the average annual income of a female with 8 years of eduction and 20 years ofworking experience? What about a male of the same condition?
Describe your answer to a person who has never had a course in statistics.
Mean 1400 grams and standard deviation 20 grams. Find positive numbers a and b such that Y=a+bX has a mean 0 and standard deviation.
A company manufacturers batteries in batches of 18 and there is a 3% rate of defects. Find the standard deviation for the number of defects per batch.
Adult men have weights that are normally distributed with a mean of 172 lb and a standard deviation of 29 lb. Find the probability that the mean weight of the men in the sample is between 170 and 175 lb.
A firm plans to hire 100 employees during the year. It expects that 25 of these employees will obtain graduate degrees within the next 5 years of being hired. In addition, 35 employees will leave the firm within 5 years.
The top motivation is for using a credit card. Can you conclude that there has been a chagne in the claimed or expected distribution? Use a =0.025.
We have already been introduced to sensitivity analysis via the geometry of a simple example. We saw that the values of the decision variables and those of the slack and surplus variables remain unchanged even though some coefficients in the objec..
Tthe class for an oral exam, what is the probability that female students and male students will be selected? Round your answer to decimal places.
for a cluster sample the estimates of the halves came in at 58.75 and 58.35. find the standard
Critically discuss the probability that more than 175 cable households rate cable companies as good or excellent in quality transmissions?
Make a decision regarding the null hypothesis based on the sample information. Interpret the results of the test and state your conclusion.
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