A transportation agency reports that drivers in a certain city spend an average of 32 minutes commuting to work one-way each day. Assume that the distribution of commuting times is normal with a standard deviation of 12 minutes. What is the probability that a randomly selected person who commutes to work will say that they spend more than 50 minutes on their way to work? If 9 randomly selected people are surveyed, what is the probability that their average commute time is less than 22 minutes?

Q: +++++ it. b 10. Which data set has the smallest standard deviation of the x-coordinates?

A:

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A:

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A: Given

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A: here use basic of correlation coefficient and least square regression

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A: Solution

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A: Analysis of variance is an important topic in hypothesis.

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A: GivenGenerate 10 random numbers from 1-10 then then data set is 10,7,8,1,9,3,6,5,2,4sample…

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Q: ation, rank the different selection tests from = least effective) a Interviews

A: The ranking is given as,

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A: Given data is:

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A:

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A: Given qxy¯t=qxt+qyt-qxyt fTxy¯t=qxt pyt μy+t+qyt pxt μx+t qxy¯n|=qxn qyn|+qyn qxn|+qxn| qyn|

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A: Given that.   X~N( 0 , 1 )   μ=0  , ?=1 (for standard normal distribution)    Z-score =( x - μ )/?

Q: Express the confidence interval 43.8 % < p < 53.4 % in the form of p± E. %

A:

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A: Given

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A: a) xk yk xk^2 yk^2 Xk*Yk -2 1 4 1 -2 -1 2 1 4 -2 0 3 0 9 0 1 3 1 9 3 2 4 4 16 8…

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A: From the above data  Sample size =n =7