Mean number of correct answers
A multiple choice quiz consists of six questions, each with four possible answers. If the student guesses at the answer to each and every question, then the mean number of correct answers is
A. 6.00
B. 1.50
C. 4.00
D. 10.00
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A furniture manufacturer offers bookcases in three different sizes and three different colors. If every color is available in every size, then the total number of different bookcases is
After biking at the rate of 14 mph for a while, bike breaks down and he rides back with the father at the rate of thirty-five mph. How far boy rode the bicycle if he returns one hour after he left?
If a gambler rolls two dice and gets a sum of 10, he wins $10, and if he gets a sum of three, he wins $20. The cost to play the game is $5. What is the expectation of this game?
If the student randomly guesses at 20 multiple-choice questions, Determine the probability that the student gets exactly four correct. Each question has four possible choices.
In the survey, 55% of the voters support a specific referendum. If 40 voters are selected at random, and X is the number of voters that support this referendum, determine the mean and variance of X.
He simply sold both investments and has capital gain to $2,000 on each. If samuel is in 28 percent tax bracket, find amount of capital gains tax on every investment?
A standard fluorescent tube has life length that is basically distributed with mean of 6900 hours and standard deviation of 1000 hours. A competitor has developed the compact fluorescent lighting system which will fit into incandescent sockets.
i) Draw and verbally explain all symmetries of X. ii) How many symmetries are present? iii) For each of above symmetries, associate to it a 3 x 3 transformation matrix.
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