28. One of the lottery tickets that you can purchase at a local store has these payoff probabilities. Payoff ($) Probability 200 500 .5 .2 .3 What are the mean and standard deviation for the payoff variable?

Q: 2. During my office hours (from 12pm to 6pm), an average of about 2 student per hour comes in for…

A: During my office hours (from 12 pm to 6 pm), an average of about 2 students per hour come in for…

Q: 55% of college graduates know the name of the Secretary of State for the U.S. You randomly select 5…

A: (a) Obtain the mean of the binomial distribution. The value of the mean is obtained below: Let X…

Q: Teachers' Salaries The average annual salary for all U.S. teachers is $47,750. Assume that the…

A: we have to find given probability....

Q: You are trying to develop a strategy for investing in two different stocks. The anticipated annual…

A: Given data and to find:

Q: d) What is the probability that the number of drivers will be 10 or more? e) Find the mean and the…

A:

Q: Suppose that the heights of men in the United States are normally distributed with a mean of 65.6…

A: The mean is 65.6 and the standard deviation is 2.7.

Q: IQ is normally distributed with a mean of 100 and a standard deviation of 15. Suppose one individual…

A: let X: IQ X~N(μ,σ)where, mean(μ)=100    and standard deviation(σ)=15

Q: How do you solve this on excel or in general In an article in the Journal of Management, Joseph…

A: The mean amount of time lost during a three-month period was 1.4 days per employee with a standard…

Q: A Example79. Find mean, standard deviation and variance of first n natural numbere

A:

Q: Airlines for America (A4A) report that a family of four planning to travel over the holiday break…

A: Solution:- From given information Mean μ=3500 Standard deviation  σ=750 Assume that the amount spent…

Q: Mr Daydream Jr II notices that Pizza Hut's stock has had annual returns of 16%, 24%, -9%, 23%, X% in…

A: The annual returns for the last five years are 16%, 24%, -9%, 23%, and X%.The average return of the…

Q: 90% of all children spend at least how many hours per day unsupervised? hours.

A: We have given that.   X~N( μ , ?^2 )   μ=2.9 , ? =1.3   Z-score =( x - μ )/?

Q: Alcohol withdrawal occurs when a person who uses alcohol excessively s experienced a mean of 40…

A: Let X be the random variable such that alcohol withdrawal occurs. Studies have shown that the onset…

Q: Example 5 Mean of a binomial distribution is 20 and the variance is 16. Calculaten, pandq

A: Given;X~binomial(n,p,q)and Mean=20  i.e.  np=20    variance=16 i.e. npq=16

Q: oks will be greater $454? Suppose from past d standard deviation is $40. What might you conclude…

A: From the available information, Sample size, n=625 Population mean, μ =450 Population standard…

Q: Mustration 23. Bring out the fallacy, if any, in the following statement : (a) The mean of a…

A:

Q: Data from an experiment show that the standard deviation is 3.6 and the mean is 23.4. Find the…

A:

Q: A certain brokerage house wants to estimate the mean daily return on a certain stock. A random…

A: We have given that,  The data set is,  0.46, -1.46, 1.91, 2.83, 1.45, -1.02, 0.32, 2.21, -0.42,…

Q: Mean rent in a city is $500 per month with a standard deviation of $30. The rents are normally…

A:

Q: Write the binomial probability for the shaded region of the graph and find its value. Select the…

A: Here, n = 16 and p = 0.6 he binomial probability for the shaded region of the graph is P5≤x≤7.

Q: Another name for the mean is expected value. True

A: 2) Answer:- We know that In probability distribution , Expected value = mean = Σ(Xi*P(Xi)) ,  Xi =…

Q: ou go to see eight movies every year and win whenever nobody talks. The long-term probability of…

A: Given data, n=8 p=0.3

Q: The standard deviation is also called the give-or-take value. True

A: we have to state that the given statement is true or false.  statement : The standard deviation is…

Q: An insurance risk manager has observed that the most common insurance product purchased by business…

A: Given Information:  Mean value = 32.2 m Standard deviation = 0.3 m

Q: In a recent study on world happiness, participants were asked to evaluate their current lives on a…

A: Given that,Mean is 5.6 Std deviation = 2.4

Q: A car service center guarantees that the maximum waiting time for its customers is 20 minutes for a…

A:

Q: Find the probability that, when playing 100 games, the player will win more than $5 on average.…

A: The following information has been provided: μ=4, σ=0.583\mu = 4, \text{ } \sigma = 0.583

Q: Weekly demand at a grocery store for a brand of breakfast cereal is Normally distributed with a mean…

A: Given problem Given that   Weekly demand at a grocery store for a brand of breakfast cereal is…

Q: A certain brokerage house wants to estimate the mean daily return on a certain stock. A random…

A:

Q: A certain brokerage house wants to estimate the mean daily return on a certain stock. A random…

A: Given data, -1.56 -1.89 -0.28 -0.55 1.92 2.12 1.77 -2.47 2.63 -1.06 0.29…

Q: Consider a game in which you toss a coin 4 times. You have to pay $5 to play the game. You win $50…

A: The probability distribution of the given information is as follows:

Q: The average individual monthly spending in the United States for paging and messaging services is…

A: Suppose a random variable X has mean µ and standard deviation σ. Therefore, the z-score of that…

Q: 18) On one tropical island, hurricanes occur with a mean of 2.74 per year. Assuming that the number…

A: Given,The mean no.of hurricanes occur in a year is 2.74So , the mean no.of hurricanes occur in 3…

Q: A professor knows that her statistics students' final exam scores have a mean of 79 and a standard…

A:

Q: You are looking at taking two professors for a course. The first professor has an average grade of…

A: The theory of probability has its origin in the seventeenth century.The king of France who…

Q: Discuss the applications of Poisson distribution.

A:

Q: When will I see the credit?  In a random sample of 170 customers, 90 ordered chicken sandwitches…

A: The probability that at least 150 favor a charter school is obtained below: From the given…

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.