Joanna is considering three possible jobs. The following table shows the possible incomes she might get in each job.For each job, calculate the expected value, the variance, and the standard deviation. If Joanna is averse to risk (asmeasured by variance), what can you predict about her job choice? What if she is risk neutral?Outcome AProbability50%50%1Job 1Job 2Job 3atun (5%) of Inb.1 isEarnings$25$15$30Outcome BProbability50%50%Earnings$35$45 and the expected value of Job 3 isNext, the variance of Job 1 isthe variance of Job 2 isEV=$30. (Enter your response rounded to two decimal places.)and the variance of Job 3 isThe standard deviation (SD) of Job 1 isthe standard deviation of Job 2 isEV = $ 30,and the standard deviation of Job 3 isVariance = 25,Variance = 225,Variance = 0.SD =kSD=SD =

The probability distribution of earnings for three jobs for outcomes A and B are given below: For…

Answered: Next, the variance of Job 1 is 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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Two coworkers commute from the same building. They are interested in whether or not there is any variation in the time it takes them to drive to work. They each record their times for 20 commutes. The first worker's times have a variance of 12.2. The second worker's times have a variance of 16.9. The first worker thinks that he is more consistent with his commute times and that his commute time is shorter. Test the claim at the 10% level.What is the F statistic? (Round your answer to two decimal places.)
In swimming, clearly you would like to swim fast, but swimming consistent times is also important. A survey of 26 swims by men on a local university's swim team found a variance of their swimming times was 7 seconds. A similar survey of 21 swims by swimmers at a different university found the variance was 12 seconds. When testing the hypothesis (at the 5% level of significance) that the variances are equal, what is the test statistic? (please round your answer to 2 decimal places)
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A study aims to compare the social media usage rates of men and women. Nine men and 9 women are drawn from the general population and the average time (in minutes) they spent on social media each day was compared (men’s mean = 40, sum of squares = 153; women’s mean = 48, sum of squares = 216). What is the (a) estimated population variance for each random sample, and (b) pooled variance? Estimated population variances = 19.13 and 27.00; Pooled variance = 23.07 Estimated population variances = 19.13 and 27.00; Pooled variance = 20.50 Estimated population variances = 17.00 and 24.00; Pooled variance = 20.50 Estimated population variances = 17.00 and 24.00; Pooled variance = 23.07
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Next, the variance of Job 1 is the variance of Job 2 is and the variance of Job 3 is The standard deviation (SD) of Job 1 is the standard deviation of Job 2 is Variance = 25. Variance = 225, Variance = 0. SD =