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Insurance companies track life expectancy information to assist in determining the cost of life insurance policies. Last year the average life expectancy of all policy holders was 77 years. An insurance company wants to determine if their clients now have a longer life expectancy, on average, so they randomly sample 20 of their recently paid policies. The sample has a mean of 78.6 years and a standard deviation of 4.48 years. What is the value of the statistic?
A. 2.176
B. 1.597
C. 1.987
D. 2.355
E. 1.896
Debit card purchases are for more than $50. Ms. Tina Stevens just purchased a new dress that cost $120. What is the probability that she paid cash or check?
Use the study to estimate the risk of an air bag fatality on a child seated on the front passenger seat.
Compute cumulative probabilities for these numbers in second column. Then create a histogram illustrating data distribution. Using generated Normal probability table, determine probability of Pr(X
Complete the problems below and submit your work in an Excel document. Be sure to show all of your work and clearly label all calculations. All statistical calculations will use the Employee Salary Data Set.
A sales person at a company sold 6,903,435 of hardware equipment last year, a figure that represented the eighth decile of sales performance at the company. What can you conclude about the salesperson performance?
You select a random sample of 16 cities similar to Statesville in demographic and economic characteristics and collect the following data on FOOTAGE (in 10,000 square feet) and RETURN (rate of return as a %). a. Analyze the above output to determi..
questionthe proportion of a companys earnings paid out to its shareholders in the form of dividends is called the
Define validity and reliability. How can we insure our data is both reliable and valid? Which of these two do you think is the more important?
Suppose that, from a population of 75 bank accounts, we want to take a random sample of six accounts in order to learn about the population. How many different random samples of six accounts are possible?
Explain briefly how simple data analysis methods you are to use in this project can be used in your chosen engineering discipline and for what purpose.
The manufacturer of the ColorSmart-5000 television set claims that 95 percent of its sets last at least five years without needing a single repair.
we wish to estimate the mean using a sample size of n = 49. Find the probability that we could be correct within 1kg/m 2 .
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