What is a random​ variable?         Question content area bottom Part 1 Choose the correct answer below.     A. A variable is random when it has a finite or countable number of possible outcomes that can be listed.   B. A variable is random when it has an uncountable number of possible outcomes.   C. The outcome of a probability experiment is often a category or label. When this​ occurs, the outcome is called a random variable.   D. The outcome of a probability experiment is often a count or a measure. When this​ occurs, the outcome is called a random variable

Q: If a coin is tossed three times, the probability of getting the same face for all three tosses is:…

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Q: Giving a test to a group of students, the grades and gender are summarized below A 15 13 Total 28 12…

A: Here the given table is :-ABCTotalMale1582043Female1341128Total28123171Using formula,

Q: Question No 1: Data are in thousands of vehicles. The non-U.S. manufacturers are led by Toyota,…

A: Given,    CAR LIGHT TRUCK TOTAL US 87.4 193.1 280.5 NON-US 228.5 148 376.5 TOTAL 315.9…

Q: At a certain airport 72% of the flights arrive on time. A sample of 20 flights is studied. a.Find…

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Q: Nine percent of the population has blood type B. If we choose 18 people at random, what is the…

A: Given,n=18p=0.09q=1-0.09=0.91Let X= no.of people have blood type B in a sample of 18…

Q: Exhibit 5-8The student body of a large university consists of 60% female students. A random sample…

A: Given Datap = 0.60n = 8probability that among the students in the sample at least 7 are female are…

Q: In a class of students, the following data table summarizes the gender of the students and whether…

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Q: Which of the following is more likely to occur? Probability of fishing in the sea is 0.45.…

A: as we know    event is less likely if probability is near to 0  and event is more likely if…

Q: d. A reservation costs $25 and passengers who cannot be accommodated will receive $25 refund. How…

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Q: Find the indicated probability. In a certain class of students, there are 8 boys from Wilmette, 6…

A: It is an important part of statistics. It is widely used.

Q: Leslie, a park manager, wants to determine if there are enough swings to go around in one of the…

A: The formula for mean is given by:

Q: There are 45 students in a class. One student is selected for the best student award. What is the…

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Q: A political pollster is conducting an analysis of sample results in order to make predictions on…

A: Followings are the Explanation of the question 1) The percentage of voice sin the sample to win the…

Q: A breakdown of the sources of energy used in the United States is shown below.  Choose one energy…

A: a) The probability that the energy source is not oil selected person is a man is calculated as…

Q: The managers of a corporation were surveyed to determine the background that leads to a successful…

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Q: 4. What is the expected number of cars? 1/4 5. What is the standard deviation? 6

A: Given PMF of X. x = [0,1,2,3,4]p(x) = [.005,.120,.125,.500,.250]Now will using this pmf to find…

Q: In a statistics class there are 18 juniors and 10 seniors; 6 of the seniors are females, and 12 of…

A: Use the given information to create the summarized table is, Total number of students = 28 (a) The…

Q: 1. 66 students were surveyed about pet ownership. They were asked if they own a dog or cat. 24 said…

A: Venn diagram helps to visualize the finite groups. It explains the similarity and dissimilarity…

Q: . Determine whether the following is a probability model.

A: Given: Outcome Probability Erica 0.3 Joanne 0.2 Laura 0.1 Donna 0.5 Angela -0.1

Q: In a class of students, the following data table summarizes how many students have a brother or a…

A: Given information,   Has a brother Does not have a brother Total Has a sister 3 4 7 Does not…

Q: If one student is chosen at random, Find the probability that the student was female AND got a "A".…

A: It is given that a test to a group of students, the grades and gender.

Q: A marketing firm conducted a credit card survey in a shopping mall According to the poll, 18…

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Q: Which of the following statements is true about a random variable? Explain your reasoning. a. A…

A: Given problem Given that   Which of the following statements is true about a random variable ?…

Q: 175 engineering students are polled on which sport they play: Volleyball or Basketball. 103 students…

A: Probability: The probability is defined as the ratio of number of favorable outcomes by total number…

Q: Find the probability that fewer than three of them fail the test.

A: Consider, x is a random variable that all registered automobile in Colorado fails the emission…

Q: Find the indicated probability. Give your answer as a simplified fraction. The managers of a…

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Q: 13. A small bag contains 6 pennies, 5 nickels, 3 dimes, 5 quarters, and 2 one-dollar coins. a. You…

A: Total number of coin:  21 coins a). The probability that a one dollar coin or a dime:…

Q: 1. Amy has a personal email account and a work email account. 60% of her emails come into her work…

A: It is given that only 1% of the emails in her work account are spam, and 5% of the emails in her…

Q: A teacher is currently teaching two statistics​ classes, one at​ 8:00 A.M.and the other at​ 10:00…

A: Given, Number of absent student Probability (8am class) Probability (10am class) 0 0.05 0.15…

Q: It is reported that 77% of workers aged 16 and over drive to work alone. Choose 8 workers at random.…

A: Binomial distribution: The binomial distribution gives the probability of number of successes out of…

Q: A roulette wheel has 38 numbers:               18 are black,               18 are red, and…

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Q: The 2010 census found that 13.9% of adults in the United States identified themselves as being of…

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Q: Full Time Part Time   Boys 3 10 13 Girls 16 11 27 total 19 21 40   A student selected at random.…

A: Given, Full Time Part Time  Total Boys 3 10 13 Girls 16 11 27…

Q: What is the difference between an outcome and an event? Choose the correct answer below. O A. An…

A: Difference between an outcome and an event .

Q: 6. Riding to School The probability that John will drive to school is 0.37, the probability that he…

A: Given: The probability that John will drive to school = 0.37 The probability that he will ride with…

Q: Giving a test to a group of students, the grades and gender are summarized below B Total Male 12 8…

A: Solution: The given table of data is

Q: Use the table below to find the chance that a randomly selected person on the student government…

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Q: Sixty-five percent of men consider themselves knowledgeable football fans. If 11 men are randomly…

A: It is given that the number of observations are independent with the probability of success p = 65%…