You were analyzing a stock and came up with the following probability distribution of the stock returns. What is the coefficient of variation on the company'sstock?State of the EconomyBoomNormalRecessionO 0.3757O 0.3193O 0.4884O 0.4132O 0.4320Probability of State Occurring13%52%35%Stock's Expected Return25%16%8%

Given dataState of the Economy Probability of State OccurringStock's Expected…

Answered: You were analyzing a stock and came up…

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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Mitena would like to know the mean (or expected value) of the following probability distribution. What would you tell her is the value of the mean? X -2 0 3 4 F3 5 2.8 O 10 0 3 O 0.56 O None of these Submit Question 4 P(x) 0.2 0.1 0.1 0.1 0.5 R F4 % 5 T G O F5 6 H F6 & U J F7 8 5. PrtScn FB K Home ( 9 End
Observations of a river that is subject to flooding have been carried out over a 100 year period. The number of floods that have occurred per year are given in the following table. Number of years 30 35 22 10 0 Number of floods 0 1 2 3 4 Determine the probability of flooding for the next fifty years.
The figure below represents the data from Table 3.6 in the book. It summarizes the lengths of hospital stays (days) for a sample 25 patients. Duration of hospitalization (days) 10 9 9. 8. 4. 3. 2. 06-10 11-15 16-20 >20 01-05 What is the probability that someone,stayed in the hospital 6 days or more? 64% 36% 72% None of these choices are correct. O O 0 O
The following table shows the distribution of murders by type of weapon for murder cases in a particular country over the past Weapon 12 years. Complete parts (a) through (e). Probability Handgun Rifle Shotgun Unknown firearm Knives Hands, fists, etc. 0.472 0.024 0.034 0.144 0.133 0.055 Other 0.138 (a) Is the given table a probability model? Why or why not? O A. No; the probability of all events in the table is not greater than or equal to 0 and less than or equal to 1. O B. No; the sum of the probabilities of all outcomes does not equal 1. OC. No: the probability of all events in the table is not greater than or equal to 0 and less than or equal to 1, and the sum of the probabilities of all outcomes does not equal 1. OD. Yes; the rules required for a probability model are both met.
Let X = {Email, In Person, Instant Message, Text Message}; P(Email) = 0.06 P(In Person) = 0.55 P(Instant Message) = 0.24 P(Text Message) = 0.15 Is this model a probability distribution? A. Yes. B. No. C. Maybe.
Here is the probability model for the blood type of a randomly chosen person in the United States. Blood type O A B AB Probability 0.53 0.22 0.06 0.19 What is the probability that a randomly chosen American does not have type O blood? ______________% Round to the nearest 0.01%
The following table represents the highest educational attainment of all adult residents in a certain town. If an adult is chosen randomly from the town, what is the probability that they have a high school degree or some college, but have no college degree? Round your answer to the nearest thousandth. High school only Some college Bachelor's degree Master's degree Total Age 20-29 Age 30-39 Age 40-49 Age 50 & over 1346 278 1866 2069 1640 1143 6198 1060 1471 1676 433 4640 1531 640 456 2905 2504 1966 887 7223 Total 4550 7575 5922 2919 20966
A pencil company has four extruders for making pencil lead. The maintenance manager has determined from historical data that the following table describes the distribution of the number of extruders down (out of operation) on any given day: y 0 1 2 3 4 P(y) 0.5 0.3 0.1 0.05 0.05 a. Find the probability that three or more extruders are down. b. Find the probability that fewer than one extruder is down. c. Find the expected number of extruders down. d. Find the population variance and the population standard deviation for the number of extruders down.
You are given the following probability distribution for the returns on Security A and Security B: Probability 0.3 0.3 0.3 0.1 Return on Security A 37% 7% 20% -15% Return on Security B 13% 19% 26% -22% Assume you invest $4,000 in Security A and $6,000 in Security B. What are the expected return and standard deviation of your portfolio?
The following report is from the National Highway Safety Administration, and it is based on over 800,000 deaths. The report lists the type of crash and the percent of fatalities: Type of Crash Percent of Fatalities Single car crash 45% Two-car crash 22% Car crashing with a truck 25% Crash involving 3 or more vehicles 8% Consider a recent car crash that resulted in a fatality. What is the probability that a single car crash had occurred?
Hospital visits: According to a health agency, there were 409,689 hosital visits for asthma-related illnesses in a recent year. The age distribution was as follows. Round your answers to four decimal places if necessary. Age Range Less than 1 year 1-17 18-44 45-64 65-84 85 and up Total Send data to Excel Part 1 of 3 (a) What is the probability that an asthma patient is between 18 and 44 years old? The probability that an asthma patient is between 18 and 44 years old is 0.1944 Part 2 of 3 (b) What is the probability than an asthma patient is less than 1 year old? The probability that an asthma patient is less than 1 year old is 0.0192 Part: 2/3 Number 7862 103,032 79,653 121,731 80,658 16,753 409,689 Part 3 of 3 (c) Using a cutoff of 0.05, is it unusual for an asthma patient to be 85 years old or older? Based on a cutoff of 0.05, it (Choose one) unusual for an asthma patient to be 85 years old or older. is is not X
Consider the following table: Value of X Probability -3 0.2 -1 d 2 0.4 3 0.2 1. What is the value of d? 2. Find the expected value of X?

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