Determine the standard deviation of ages
Out of the total of 10 college textbooks determine the standard deviation of their ages if the oldest textbook is known to be 7.9 years old and newest textbook is 1.3 years old.
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The percentage of foreign-born people who live in the U.S. and who are not naturalized citizens is overstated by the U.S. Census Bureau.
A civil service exam yields scores with a mean of 81 and a standard deviation of 5.5. Using Chebyshev's Theorem what can we say about the percentage of scores that are above 92?
Determine rule of concentration function c(x) which expresses percentage of alcohol in resulting mixture as the function of number x of gallons of pure alcohol which are added.
What is the probability that the average age of these 40 airplanes is at least 14 years old? Round your answer to 4 decimal places. Remember to round your z-value to two decimal places.
A lake is formed with the newly constructed dam. It is stocked with1,000 fish. How many years to nearest year will this take?
Once a week, Mrs. Baker makes sugar cookies. First week she makes recipe, she utilizes full 2 cups of sugar called for in recipe. How much sugar does she use in fifth week of baking?
If a student from the survey is selected at random, then find out the probability that the student favors same sex marriages, given that student is not the Senior?
Assume that the average full time college student in the U.S. requires a total of $10,500 per year to cover the costs of tuition, books and fees with a standard deviation of $1,300.
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