1BCarson Inc.'s manager believes that economic conditions during the next year will be strong, normal, or weak, and she thinks that the firm's returns will havethe probability distribution shown below. What's the standard deviation of the estimated returns? (Hint: Use the formula for the standard deviation of apopulation, not a sample.) Do not round your intermediate calculations..●EconomicConditionsStrongNormalWeakO966%Ob 16.73%O c. 21.51%d. 11.83%O 17.56%Prob.30%40%30%Return25.0%12.0%-17.0%

Let X represent the firms return. The probability distribution of X is P(x)x0.30250.40120.30-17

Answered: arson Inc manager believes that…

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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Provide step by step explaination (no excel) q1- The probability distribution for the return from a share over the next year has a mean of 11.8% and a standard deviation of 3.3%. What range of returns can we be over 99% confident that the actual return over the next year will be within? a. 1.9% to 21.7% b. 3.6% to 20.1% c. 8.5% to 15.1% d. 5.2% to 18.4% Clear my choice
Police response time to an emergency call is the difference between the time the call is first received by the dispatcher and the time a patrol car radios that it has arrived at the scene. Over a long period of time, it has been determined that the police response time has a normal distribution with a mean of 8.9 minutes and a standard deviation of 2.4 minutes. For a randomly received emergency call, find the following probabilities. (Round your answers to four decimal places.) (a) the response time is between 5 and 10 minutes(b) the response time is less than 5 minutes(c) the response time is more than 10 minutes
Normal Distribution Problems
The probability model below describes the number of repair calls that an appliance repair shop may receive during an hour. Complete parts a and b below. Repair Calls 2 3 4 Probability 0.1 0.5 0.2 0.2 a) How many calls should the shop expect per hour? The shop should expect calls per hour. (Type an integer or a decimal. Do not round.) b) What is the standard deviation? The standard deviation is. (Round to two decimal places as needed.)
What would this normal probability plot lead you to believe about the normality of the population from which the data were taken? 2.0 1.0 -1.0 -2.0 120 130 140 150 160 170 180 190 The points show a pattern straying from a straight line, indicating that the population is not approximately normal. The points appear to be randomly scattered, indicating that the population is probably approximately normally distributed. The points roughly follow a linear pattern, indicating that the population is probably approximately normally distributed. The points roughly follow a linear pattern, indicating that the population is probably not approximately normally distributed. z-Score
Ages of Proofreaders At a large publishing company, the mean age of proofreaders is 36.2 years and the standard deviation is 3.7 years. Assume the variable is normally distributed. Round intermediate z-value calculations to two decimal places and the final answers to at least four decimal places. Part 1 of 2 If a proofreader from the company is randomly selected, find the probability that his or her age will be between 36 and 37.5 years. P (36 < X < 37.5) = 0.1589 Part: 1 / 2 Part 2 of 2 G If a random sample of 22 proofreaders is selected, find the probability that the mean age of the proofreaders in the sample will be between 36 and 37.5 years. Assume that the sample is taken from a large population and the correction factor can be ignored. P (36 < X <37.5) = X

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