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An auto insurance company classifies policy holders into three equal-sized risk categories: good, average, bad. In a given year the probability of having an accident for each of the risk categories is 5%,10%,25% respectively. If a person did not have an an accident last year what is the probability that she was placed in the good risk category
The College Board finds that the distribution of students
Suppose Ana has a pair of dice (the traditional six-sided kind). Let X= the difference of the largest minus the smallest number showing on the dice. Find the PMF for X.
A sample of 10 executives indicated that they spent an average of $11.30 with a sample standard deviation of 0.56 on lunch. Let = 0.05. What are the critical values?
What are the possible values of this random variable and draw the density function.
a) State the Null and Alternative Hypotheses (1)
Study whether systolic blood pressure varied by time
Find the probability of drawing a diamond card in each of the consecutive draws from a wellshuffled pack of cards, if the card drawn is not replaced after the first draw.
1. a university has been tracking the percentage of alumni giving to its annual fund each for the past 10 years. the
1. suppose south korea can produce 100 computer chips with 10 hours of labor input and 50 bed linens with 6 hours of
1. length of pregnancies the length of human pregnancies from conception to birth varies according to a distribution
an investigator wants to assess whether smoking is a risk factor for pancreatic cancer. electronic medical records at a
A population proportion is to be estimated. Estimated the minimum sample size needed to achieve a margin of error E=0.01 with a 95% degree of confidence.
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