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A car insurance compancy has recorded the number of claims for the past quarter by age and gender. The information is recorded below.
Age Male FemaleUnder 25 25 1225-50 14 8Over 50 12 9
If a claim is randomly selected, what is the probability the person was under 25 or male?
What is the point estimate of the mean planned expenditure by all Americans taking long summer vacations in 2002?
You have two unbiased estimates, e 1 and e 2 , of a quantity with variances V 1 and V 2 respectively, and covariance Cov {e1,e 2 } = C. Form a new unbiased estimate:
I understand how to do a time series graph with one variable versus time in years, but I am not sure how to graph if the time is in months with more than one variable with a scatter plot.
Multiple choice questions based on F-distribution.
A research firm reported that 15% of those surveyed stated their health as poor, 26% as good, 40% as very good, and 19% as excellent. A health professional in Chicago wanted to determine if people in Chicago had similar feelings toward their healt..
Computing the mean and standard deviation for the given data - Find the value for the new standard deviation
The probability that Pete will catch fish when he goes fishing is .8. Pete is going to fish three days next week. Define the random variable x to be the number of day Pete catches fish. (hint. binomial distribution)
Then describe trade-offs which will happen when you lower sample to $10,000 to meet their budget.
In an analysis of variance problem involving 3 treatments and 10 observations per treatment, SSE = 399.6. The MSE for this situation is:
Explain the distribution of mean of samples of size 15.
Determine future value of annuity due which has $750 deposited at the starting of each month for 15 years at 5.9% compounded monthly.
By constructing null and alternative hypotheses, computing critical values, and comparing test statistic to critical value.
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