Tickets for a raffle cost $9. There were 626 tickets sold. One ticket will be randomly selected as the winner, and that person wins $1400 and also the person is given back the cost of the ticket. For someone who buys a ticket, what is the Expected Value (the mean of the distribution)? If the Expected Value is negative, be sure to include the "." sign with the answer. Express the answer rounded to two decimal places. Expected Value = $

Q: suppose that you hav e set of data that has a mean of 34 and a standard deviation of 6. a. is the…

A: Given: A data set has a mean of 34 and a standard deviation of 6.

Q: Micheal invested $2000 in a certain stock. At the end of the year the stock could be worth $1600,…

A: Given: Micheal invested $2000 in a certain stock. At the end of the year the stock could be worth…

Q: A professional basketball player typically attempts 8 free throws per game. Let X represent the…

A: To find the median of the distribution, you'll first need to arrange the outcomes in ascending order…

Q: At the end of the semester a professor wants to organize student’s grades by how many students…

A: Given data, At the end of the semester a professor wants to organize student’s grades by how many…

Q: A sample mean has a z= -4.0 on the sampling distribution created from the population of psychology…

A:

Q: If the average number of textbooks in professors' offices is 14, the standard deviation is 5, and…

A: Given that For textbooks, mean = 14, and SD = 5 For age, mean = 42, and SD = 10

Q: Assume that the readings on the thermometers are normally distributed with a mean of 0° and standard…

A:

Q: A research firm claims that the distribution of the days of the week that people are most likely to…

A: The question is about categorical data analysis.Given :

Q: A state fair has a spinner wheel as seen to the right. You walk up to the table and pay $2 for a…

A: Event zero win $2 win $3 win $4 value of event 0 2 3 4 Probability  2/8 1/8 2/8 2/8

Q: Mary scored a 25 when the mean is 23 with a SD of 1.5 Sarah scored a 7 when the mean is 6 with a SD…

A: Given Information: Mary's score is 25 Mean μ=23 Standard deviation σ=1.5   Sarah's score is 7 Mean…

Q: A professor grades students on four tests, a term paper, and a final examination. Each test   counts…

A:

Q: Given the mean is 100, the standard deviation is 20, and 12 people took the test, which person…

A: We have given that Sample size=n=12 Mean=mu=100  Standard deviation=sigma=20

Q: 6. The probability that a chocolate biscuit is double wrapped is 0.01, and a box contains 150…

A: Discrete Random Variable: A discreate random variable is a variable whose values can be obtained by…

Q: pasting the output into Word and attaching it to your post. Graph the data as a histogram with a fit…

A:

Q: A sports statistician recorded the speed of every serve made by a certain tennis player at the U.S.…

A: It is given that the mean serve speed in the tournament is 98 miles.The distribution of the serve…

Q: Decide if each of the following statements is True or False. Transforming an entire distribution of…

A: Solution: The given statement is “Transforming an entire distribution of scores into z-scores into…

Q: A student takes a multiple-choice test that has 6 questions. Each question has four choices. student…

A: It is given that,  A student takes a multiple-choice test that has 6 questions i.e. n=6 Each…

Q: A professor grades students on three tests, four quizzes, and a final examination. Each test counts…

A: It is given that Sara has test scores of 95, 70, and 86, quiz scores are 91, 66, 76, 85 and her…

Q: A hospital director is told that 55% of the emergency room visitors are insured. The director wants…

A: Given: n= 320 ,x= 160 p= 0.55 ,significance level(∝)= 0.01 p̂= 160 / 320 =0.5

Q: Your statistics teacher splurges on five comic books, spending $1230, $70, $540, $610, and $1600 on…

A: Given 1230 70 540 610 1600

Q: 0.25 inches. About 95% of the distribution lies between what two values?

A:

Q: d. What is the probability that a randomly selected giraffe will be shorter than 17.7 feet tall? e.…

A: d) We have to find P(X<17.7)

Q: box contains three $1 bills, two $5 bills, one $10 bill, and one $20 bill. Construct a probability…

A: Given that, A box contains three $1 bills, two $5 bills, one $10 bill, and one $20 bill.

Q: On a nationwide math test, the mean was 58 and the standard deviation was 4. If Roberto scored 70,…

A:

Q: 80. Suppose that the value of a stock varies each day from $16 to $25 with a uniform distribution.…

A: The value of a stock varies each day from $16 to $25 with a uniform distribution.

Q: A hospital director is told that 54 % of the treated patients are insured. The director wants to…

A: Sample of size(n)=280population proportion(P)=0.54and X=140

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.