In a certain computer card game, the player is awarded 5 points for each card that is moved to a correct position.The player is penalized 10 points for each minute the game is played. Let the random variable X represent thenumber of cards moved to a correct position, and let the random variable Y represent the number of minutes thegame is played. The means and standard deviations of the random variables for a particular player are shown inthe table below.VariableXYMeanStandard Deviation9.512.95.41.1Assume that X and Y are independent. What are the expected value and the standard deviation of the points pergame for the player?(A) The expected value is -6.5, and the standard deviation is 63.5.(B) The expected value is -6.5, and the standard deviation is 65.4.(C) The expected value is 4.1, and the standard deviation is 63.5.(D) The expected value is 4.1, and the standard deviation is 65.4.(E) The expected value is 101.5, and the standard deviation is 63.5.

The correct option is B: The expected value is -6.5, and the standard deviation is…

Answered: In a certain computer card game, the…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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In an certain species of newt, offspring are born either green or black. Suppose that 60% of these newts are born green. If we sample 144 of these newts at random, the probability distribution for the proportion of green newts in the sample can be modeled by the normal distibution pictured below. Complete the boxes accurate to two decimal places . Note: The left box is 2 standard deviations below the mean. The middle box is the mean. And, the right box is 2 standard deviations above the mean.
In an certain species of newt, offspring are born either green or black. Suppose that 50% of these newts are born green. If we sample 103 of these newts at random, the probability distribution for the proportion of green newts in the sample can be modeled by the normal distibution pictured below. Complete the boxes accurate to two decimal places. Note: The left box is 2 standard deviations below the mean. The middle box is the mean. And, the right box is 2 standard deviations above the mean.
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which statement is true and false?
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