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A point D is chosen on the line AB, whose midpoint is C and whose length is a. If X, the distance from D to A, is a random variable having the uniform density with α = 0 and β = a, what is the probability that AD, BD, and AC will form a triangle?
A research analyst regresses the number of calls for service (Y) on the Fahrenheit temperature at 4:00 in the afternoon (X). The regression equation finds: Y = 62 + 2.4 X with an r 2 of .67
A raffle offers a first prize of $1000 2 second prizes of $300 and 20 third prizes of $10 each. If 15000 tickets are sold at 75 cents each, find the expected winnings (IN CENTS) for a person buying one ticket?
In a sample of 210 men, 35 prefer sugar free soft drinks. In a sample of 220 women, 42 prefer sugar free soft drinks. Using a significance level of 0.05, test whether women prefer sugar free drinks more than men. Calculate the p-value.
question of employees in entertainment industry 0.4 work part itme and 0.49 earn more than 20540 annually. if 0.36 of
The average salary of senior managers in the construction industry is $180,000 per year. Suppose we would like to take a sample of senior managers at a newly established company XYZ to see whether the mean annual salary is different from that..
To determine the possible effect of a chemical treatment on the rate of seed germination, 300 chemically treated seeds and 250 untreated seeds were sown.
What is the 95% Confidence Interval for the true population slope between Wins and Saves and what is the standard error of the estimate and what are its units?
Confidence interval for the mean life expectancy of a nonsmoker - confidence interval for the mean price of a gallon of heating oil on the west coast.
The National Readership Survey of newspapers and magazines has been conducted over many years and illustrates the changing reading patterns of the population. Their methodology and sample design have been refined and can serve as a model for other..
What is the probability that all three of these individuals have Alzheimer's disease? What is the probability that at least one of the three people has Alzheimer's disease?
on a toss of a fair die a person wins 10 if 1 or 3 results loses 5 if 4 or 6 results wins 5 if 2 results and loses 10
Let μ be the hourly wage (excluding tips) for workers who provide hotel room service in a large city. A random sample of a number (more than 30) of such workers yielded a 95% confidence interval for μ of $8.46 to $9.86 using the normal distributio..
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