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A test was given to seven classes to assess student's knowledge of probability and statistics. The average test scores for each of the seven classes are listed below.
{ 76%, 61%, 82%, 84%, 75%, 80%, 79% }
Use these sample values to calculate a 90% confidence interval estimate of the average test score for these classes. Do this calculation by hand, showing the details of each step.
A baseball team plays in a stadium that holds 56000 spectators. With the ticket price at $9 the average attendance has been 24000. When the price dropped to $8, the average attendance rose to 28000.
Mr. Brown has 10 black gloves and 12 brown gloves in his closet. He blindly picks up some gloves from the closet. What is the minimum number of gloves Mr. Brown will have to pick to be certain to find a pair of gloves of the same color?
The region bound by the circle (x-a)^2 + y^2 = a^2 is revolved around about the y-axis to generate a solid
Suppose you are committed to owning a $199,000 Ferrari. If you believe your mutual fund can achieve a 12 percent annual rate of return and you want to buy the car in 9 years on the day you turn 30, how much must you invest today?
You have a choice of five appetizers, ten entrees, three beverages, and six desserts. How many possible complete dinners are possible?
A recent study reported that college students study for an average of four hours per day. You believe this figure is too large & you decide to conduct your own test. Find the p value & explain its meaning.
Find the present value of Rs. 2,000 due in 6 years if money is worth compounded semi-annually. (b) Ascertain the present value of an amount of Rs. 8,000 42/SEM - I /2011
An equilateral triangle has vertices at (0,0) and (6,0) in a coordinate plane. what are the coordinates of the third vertex?
The formula b=26a is used in New England to estimate the minimum furnace output,b,in BTUS. for a modern house with a square feet of flooring.
Given that the mean of a set of data is 25 and the standard deviation is 3, what would be the coefficient of variation?
Joe wants to sell his horses for 500.00 each and his cows for 300.00 each for a total of 2100.00 for them all. How many horses and how many cows are Joe selling?
A heavy rope, 30 ft long, weighs 0.6 lb/ft and hangs over the edge of a building 70 ft high. How much work W is done in pulling half the rope to the top of the building?
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