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1) What is the relationship between descriptive statistics and Affirmative Action ?
2) Can using probability in market trending decisions lead to a bad decision? Explain?
3) How do insurance companies use descriptive statistics and probability distributions to project health and auto insurance premiums? In regards to age, why is there an inverse relationship between the two premiums?
Assume that the length X in minutes of a regular season NBA game is normally Distributed with X~N (µ X , σ 2 X );
In a large western university, 15% of the students are graduate students. If a random sample of 20 students is selected, what is the probability that the sample contains:
At least half the patients are under 15 years old? First, explain how this can be modeled as a binomial distribution with 8 trials, where success is visitor age is under 15 years old and the probability of success is 20%.
Make a histogram showing the probabilties of r = 0, 1, 2, 3, 4, 5, 6, 7 or 8 defective syringes in a random sample of 8 syringes.
What was the cost for the 10 percent of employees who incurred the highest dental expense?
According to a recent survey, 275 of 400 middle-aged Americans said they used the Internet regularly. 140 of 400 senior citizens said they used the Internet regularly.
What are the endpoints of a 95 percent confidence interval for the proportion defective. (Round your answers to 3 decimal places).
At the .01 significance level, is there a difference in the use of the four entrances?
Determine the rejection region for the test of Ho: (mean 1 - mean 2) > 2.43 Use a = 0.04. z >
Decide if the events A and B are mutually exclusive or not mutually exclusive. A card is drawn from standard deck of 52 playing cards.
How large a sample is required to estimate the mean speed with a margin of error equal to 2 miles per hour with 90% confidence?
A bank official reported the results of a regression analysis designed to predict the bank's charges (y), measured in dollars per month, for services rendered to local companies.
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