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An automobile insurance company estimates the following loss probabilities for the next year on a $25,000 sports car:
Possible losses
probabilities
Total loss
0.001
50% loss
0.01
25% loss
0.05
10% loss
0.10
How much annual premium should the company charge in order to average $600 profit per policy sold?
The lifetime of a 2-volt non-rechargeable battery in constant use has a Normal distribution with a mean of 516 hours and a standard deviation of 20 hours. The proportion of batteries with lifetimes exceeding 520 hours is approximately.
In which of the following situations is bootstrapping (and other resampling methods) often used and Which of the following is a valid description of the bootstrapping method.
Calculate descriptive statistics for each stock and the S&P 500. Comment on your results. Which stocks are the most volatile? Calculate the value of beta for each stock.
How many commercials' worth of data do I need to have a margin of error no more than 3, the correct set of hypotheses
The conservative degrees of freedom for the t distribution are and The standard error, conservative degrees of freedom
Part 1. What is the appropriate distribution for such data? Part 2. Is this lot anomalous?
Consider the following time plot of the values of variable Y for each month of a 60-month period. This plot displays
How closely is the height of an individual related to the weight? Partial regression output for a sample of 92 individuals is below.
First explain what the Gini coefficient is and what hypothetical Gini values of 0 and 1 mean. Sort the data by the Gini coefficient in 2000 and look at the list of countries.
the maximum point total for the quarter was 200. The point totals for the 10 students are given in the stemplot below. For the density curve displayed below, which of the following is true?
We are interested in comparing the proportions of males and females who think earning a large salary is very important to them. I surveyed 200 of each gender and recorded their answers to the question as yes or no.
Using the dataset, produce a graph of per capita GDP for Argentina, China, and Canada from 1965 to 1995. Is inequality between these countries increasing?
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