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Suppose there is a Johnny in a line. What is the probability for Johnny to win a lottery?
A Broadway theater offers 3 tickets per performance at 70% discounted price by drawing random lottery to the people waiting in a line before the show. Today, 10 people are waiting in a line to win a
A random sample of measurements on two quantitative variables x and y is taken from a population. The data for the variables x and y are: {( x,y) |( 2,1), ( 3,2), ( 4,3), ( 5,5)}.
Use Excel or MegaStat to find the mean, midrange, geometric mean, and 10 percent trimmed mean (i.e., dropping the first three and last three observations). Do these measures of central tendency agre
Formulate a linear programming model for this problem. Use the graphical method to solve this model.
You are dealt 5 cards off the top of a standard, well-shuffled deck of 52 playing cards. Calculate the probability that you are dealt the following poker hands:
A student committee of 9 members is formed at random from a group of 20 juniors and 18 seniors. The committee has one president, one secretary and 7 regular members. A person cannot be the president
The heads and their wives of the following countries are having a dinner meeting in New York: US, Russia, Germany and Japan. They are randomly seated at a long rectangular table with 4 chairs on eac
A circuit board requires 9 different Integrated Circuits (IC). There are 4 vendors who manufacture these 9 kinds of ICs. They are Texas Instruments (TI), National Instruments (NI), Motorola (M), and
The heights in inches of 14 randomly selected adult males in LA are listed as: 71, 67, 70, 59, 71, 68, 67, 71, 80, 68, 74, 69, 72, 68.
A spinner has 4 equally likley regions numdered one to four with four different colors, red being one of them. The arrow is spun twice. What is Tue probability that the slumber will land on a one on
In a word processing program, write a brief description/explanation of how you implemented each component of the model. Write 1-2 paragraphs for each component of the model (days-to-repair; interval
An urn contains 3 red and 7 black balls. Players A and B withdraw balls from the urn consecutively until a red ball is selected. Find the probability that A selects the red ball. (A draws the first
Given 5 distinct pairs of gloves, 10 distinct gloves in all, how many ways are there to distribute two gloves to each of 5 sisters:
In a string of 12 christmas tree light bulbs, 3 are defective. The bulbs are selected randomly and tested one at a time until the third defective bulb is found. Compute the probability that the thir
These data represent the ages of drivers and the number of accidents reported for each age group in Pennsylvania for a selected year. (Age, Number of Accidents) (16, 6605), (17, 8932), (18, 8506), (
Find the mean and standard deviation of A. How much of the probability distribution is within 2 standard deviation of the mean?
The shape of the t distribution changes as the sample size changes. Explain your response.
As sample size increases, the estimated standard error also increases. Explain your response.
Except for the population mean, μ, all the numbers in the t statistic formula come from the sample data. Explain your response.
A hypothesis test produces t = 2.00 for a sample of n = 16 scores. What is the value of r2? Explain your response.
A sample of n = 25 individuals is selected from a population with μ = 80, and a treatment is administered to the sample. Which set of sample characteristics is most likely to lead to a decision t
What is the effect of a large value for the estimated standard error? Explain your response.
Under what circumstances can a very small treatment effect be statistically significant? Explain your response.
What is the estimated standard error for a sample of n = 4 scores with a variance of s2 = 36? Explain your response.