In Gallup's Annual Consumption Habits Poll, telephone interviews were conducted for a random sampleof 1014 adults aged 18 and over. One of the questions was, "How many cups of coffee, if any, do youdrink on an average day?" The following table shows the results obtained (Gallup website, August 6,2012).C.Number ofCups per Dayf.722 TO134Number ofReponses36526419391101}Define a random variable x = number of cups of coffee consumed on an average day.a. Develop a probability distribution for x.b.A person is randomly selected. What is the probability that the person consumes less than 3cups of coffee per day?A person is randomly selected. What is the probability that the person consumes more than 2cups of coffee per day?d. Develop a cumulative probability distribution for x.e.Compute the expected value of x. Show your work with a table similar to the one on page 62 ofthe course packet or page 230 of the textbook. You can enter the numbers in Excel and useExcel to construct a table.SCompute the variance and the standard deviation of x. Show your work with a table. Youranswer in parts e and f can be in one table.

Given that Number of Cups per Day Number of Responses 0 365 1 264 2 193 3 91 4 101…

Answered: Define a random variable x = number of…

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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A commuter must pass through 5 traffic lights on her way to work each day, and will have to stop at each one that is red. She estimates the probability model for the number of red lights she hits and is shown below. # of red lights Probability 0 0.05 1 0.25 2 0.35 3 0.15 4 0.15 5 0.05 What is the probability that the commuter will stop for at most 3 lights? Express your answer in decimal form as shown in the table.
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Determine whether the value is a discrete random variable, continuous random variable, or not a random variable. a. The time required to download a file from the Internet b. The height of a randomly selected giraffe c. The eye color of people on commercial aircraft flights d. The number of free-throw attempts before the first shot is made e. The amount of rain in City B during April f. The number of hits to a website in a day a. Is the time required to download a file from the Internet a discrete random variable, a continuous random variable, or not a random variable? A. It is a discrete random variable. B. It is a continuous random variable. C. It is not a random variable. b. Is the height of a randomly selected giraffe a discrete random variable, a continuous random variable, or not a random variable? A. It is a discrete random variable. B. It is a continuous random variable. C. It is not a random variable c. Is the eye color of people on commercial aircraft flights a discrete random…
n 2010 about 69.6% of full-time law enforcement workers were sworn officers, and of those, 88.2% were male. Females, however, made up 60.8% of the civilian employees. Choose one law enforcement worker at random and calculate the following. The probability that the person is a female sworn officer. The probability that the person is a male civilian employee. The probability that he or she is male or a civilian employee.
The accompanying table describes results from groups of 8 births from 8 different sets of parents. The random variable x represents the number of girls among 8 children. Complete parts (a) through (d) below. E Click the icon to view the table. a. Find the probability of getting exactly 6 girls in 8 births. (Type an integer or a decimal. Do not round.) b. Find the probability of getting 6 or more girls in 8 births. (Type an integer or a decimal. Do not round.) c. Which probability is relevant for determining whether 6 is a significantly high number of girls in 8 births: the result from part (a) or part (b)? O A. The result from part b, since it is the probability of the given or more extreme result. O B. The result from part a, since it less than the probability of the given or more extreme result. O C. The result from part b, since it is the complement of the result of part a. O D. The result from part a, since it is the exact probability being asked. d. Is 6 a significantly high…
Determine whether the value is a discrete random variable, continuous random variable, or not a random variable. a. The time required to download a file from the Internet b. The number of fish caught during a fishing tournament c. The response to the survey question "Did you smoke in the last week?" d. The distance a baseball travels in the air after being hit e. The number of hits to a website in a day f. The time it takes for a light bulb to burn out a. Is the time required to download a file from the Internet a discrete random variable, a continuous random variable, or not a random variable? C O A. It is a continuous random variable. O B. It is a discrete random variable. O C. It is not a random variable. b. Is the number of fish caught during a fishing tournament discrete random variable, a continuous random variable, or not a random variable? O A. It is a continuous random variable. O B. It is a discrete random variable. O C. It is not a random variable c. Is the response to the…
The accompanying table describes results from groups of 8 births from 8 different sets of parents. The random variable x represents the number of girls among 8 children. Complete parts (a) through (d) below. Click the icon to view the table. a. Find the probability of getting exactly 6 girls in 8 births. 0.108 (Type an integer or a decimal. Do not round.) - Probability Distribution for x Number of Girls x 0 1 2 3 4 5 6 7 8 Print P(x) 0.002 0.025 0.105 0.189 0.358 0.189 0.105 0.025 0.002 Done X

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