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It is believed that of the tea consumers at McCalister's Deli, 50% order sweet tea (event A), 40% request a lemon in their tea (event B) and 25% request sweet tea with lemon (both A and B). Find the
A kindergarten student has a cup with 9 colored pencils. Four pencils are blue, three are green, and two are red. The student randomly selects 3 pencils from the cup without replacement. What is the
Why might a researcher choose to use a multiple regression specification?
The study, published in the Archives of General Psychiatry, included 1.1 million men and women and found a longer life span among those who sleep six to seven hours a night.
How do I solve this problem, simulate the probability that a random integer between 1 and 5000 is divisible by 4, 7 or 10.?
John takes a twenty question multiple choice test in which question has five possible answers. Some of the answers he knows, and on the others he makes a random guess. The conditional probability th
The Beer institue conducted a study with looking at beer purcheses per capita across states. Some states buy more beer (43 Gallons PP in New Hampshire) Data is normally distributed with an average o
Suppose a baseball player had 243 hits in a season. In the given probability distribution, the random variable X represents the number of hits the player obtained in a game.
For the standard normal probability distribution , the area to the right of the mean is (-0.5, 0.5, 1, any value between 0 and 1)
Suppose the reaction time (in seconds) to certain stimulus is a continuous random variable X with cumulative distribution function of the form
An investment adviser for G. Prowe Rice has many clients owning shares of mutual funds. These mutual funds are categorized as Domestic Equity funds, International Equity funds, or Fixed Income funds
Sketch a picture of these data, and make sure to label the axis to show the values that deviate 1, 2, and 3 standard deviations away from the mean.
How many different ice cream treats for Judy are possible? What is the probability that Judy chooses strawberry ice cream in a waffle cone? What is the probability that Judy chooses hot fudge, caramel
In the state of Florida, non-personalized automobile license plates use 7 characters. The first 4 charactersare letters (always upper case), followed by 3 numeric digits. Answer each question separa
Suppose that there are seven prospective jurors, four men and three women who might be impaneled tosit on a jury in a criminal case. Two jurors are randomly selected from these seven to fill the two
Event A occurs with probability 0.1 and event B occurs with probability 0.5. What is the maximum probability that the intersection of A and B can have?
Conduct a test of hypothesis to determine whether the mean payroll of the teams was different from 80.0 million. Use the significance level.
A large firm has 85% of its service calls made by a contractor, and 10 of these calls result in customer complaints. The other 15% of the service calls are made by their own employees, and these ca
An analyst must decide between two different forecasting techniques for weekly sales of roller blades: a linear trendequation and the naive approach. the linear trend equation isFt = 124 + 2t,
A report from the U.S. Department of Justice reported the percent changes in federal prison populations in 21 northeastern and midwestern states during 2006. Using appropriate graphical displays and
The Mental Development Index (MDI) of the Bayley Scales of Infant Development is a standardized measure used in longitudinal follow-up of high-risk infants.
Customers arrives at a sales counter manned by a single person according to a poisson process with a mean rate of 20 per hour. The time required to serve a customer has an exponential distribution
Do you agree or disagree with the study? Support your case using statistics. Present a summary of at least 4 sentences defending your position.
Let C and D be two events in sample space with P (C)=0.12 P(D)=0.36 P (C&D)=0.03 Determine the conditional probability P(C|D). Can you please have 2 examples each for the experimental and observa
1) An important measure of the performance of a locomotive is its "adhesion," which is the locomotive's pulling force as a multiple of its weight. The adhesion of one 4400-horsepower diesel locomoti