Dr. Wilson is considering investing a fixed sum of money in each of three business ventures. Assume that the probability distribution for the number of successful ventures out of three is as follows:                                   X                            P(X)                      0                               .022                     1                               .194                    2                                .434                    3                                .350   What is the expected value for the number of successful ventures? What is the standard deviation for the number of successful ventures? What is the probability that Dr. Wilson will enjoy at least two successful ventures? What is the probability that Dr. Wilson will enjoy no successful ventures?

Q: A study has shown that the probability distribution of X, the number of customers in line (including…

A: The formula of Standard deviation is,

Q: in a certain region, the mean annual salary for electricians is $58,650. Let x be a random variable…

A: GivenMean(μ)=58650standard deviation(s)=1890sample size(n)=40

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A:

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A: We have give discrete probability distribution and we have to find the mean of the X

Q: Assume that the probability of a being born with Genetic Condition B is p = 3/20. A study looks at a…

A: Givenp=320=0.15sample size(n)=819

Q: P(x) 0.3 0.15 0.2 3 0.35 2.

A: Given data, Find the standard deviation?

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A: The probability distribution of the number of hours cars are parked has been estimated as follows:…

Q: When parking a car in a downtown parking lot, drivers pay according to the number of hours or…

A:

Q: A consumer organization inspecting new TV sets found that 23% have one appearance defect. Suppose…

A: Given  Probability of 1 tv set getting defective appearance is 0.23.we need to determine the…

Q: Suppose that the average price for a gallon of gasoline in the Country A is $2.79 and in Country B…

A: Data about the price of gasoline in two different countries is given.For country A:Mean is Standard…

Q: John plays a roulette 5 times; each time betting on red. The probability of red is 18/38=9/19. Let X…

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Q: The population mean annual salary for an electrician is $46,700.A random sample of 42 electricians…

A:

Q: You may need to use the appropriate appendix table to answer this question. Automobile repair costs…

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Q: Assume that the cholesterol levels among teenagers are Normally distributed with u (mean)= 170 and…

A:

Q: P(X=x;) a. Compute the expected value for each distribution. o. Compute the standard deviation for…

A: We want to find expected balue of each distribution and also standard deviation.  E(x)= ∑xi×P(X=xi)…

Q: The distribution of grades in an easy introductory statistics course is as follows:  Grade A B C D…

A: 1] 2] Here we take numerical values A=4,B=3, C=2 ,D=1and F=0

Q: Assume that the probability of a being born with Genetic Condition B is p = 7/12. A study looks at a…

A: From the given information, Consider, Sample size (n) = 607 Sample proportion (p) =7/12

Q: You are playing a card came, and the probability that you will win a game is p = 0.75. If you play…

A: p=0.75sample size(n)=203

Q: Find the probability of the indicated event if P(E)= 0.25 and P(F) = 0.35. Find P(E or F) if P(E and…

A: Addition rule will applied here

Q: Given the following probability distribution, Find P(x-2) 3 4 P(x=x) 0.2 0.05 0.2 0.25 P(x-2)%=D

A: In general, the total probability is always 1.

Q: In a pizza takeout restaurant, the following probability distribution was obtained. The random…

A: Given information- We have given the probability distribution for X.

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A: For country AMean()=3.74standard deviation()=0.25For country BMean()=3.40standard deviation()=0.20

Q: Let X = {Email, In Person, Instant Message, Text Message}; P(Email) = 0.06 P(In Person) = 0.55…

A: From the provided information, The probability distribution table can be constructed as: X…

Q: Find the mean of the following probability distribution? * P(x) 0 0.1605 1 0.2848 2 0.0206 3 0.2536…

A: The mean of the probability distribution is given by: EX=∑ixipi

Contingency Table

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.