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Let A and B be 2 sets, and let P(A) and P(B) denote the probabilities assigned to the 2 sets. If we know that A is a subset of B what is the relationship between P(A) and P(B)?
A researcher wishes to test the claim that the average age of lifeguards in Ocean City is greater than 24 years. She selects a sample of 36 guards and finds the mean of the sample to be 24.7 years with a standard deviation of 2 years. Is there evi..
Find the critical value Zc necessary to form a confidence interval at the given level of confidence.
Shipment costs are given in table below. Where no cost is provided, shipments are not possible. Where costs are given, shipments are possible in either direction. Sketch network model for this problem.
Given the following data on Asian and European Share of U.S. Light Truck Sales(1990-2003): Plot the market-share data. (b) Describe the trend (if any) and discuss possible causes. (c) Fit three trends (linear, exponential, quadratic).
A drug company want to know if new drug lowest the cholesterol below the target level of 120.A random sample of 25 questions has a mean of 115 and a standard deviation of 20
Is a sample of 25 papers large enough to provide a good estimate of the mean score of all 42,000 students on this exam problem? Justify your answer.
If a random sample of 500 third year students is taken at a city university, what is an estimate of the probability that 20 percent or less had switched majors within their first two years?
Find the probility that a randomly selected student has neigther credit card. Find the probability that a randomly selected student has a Mastercard or a Visa or both.
question a researcher has been hired by a pizzeria to determine which type of crust customers prefer. the restaurant
If computing a causal linear regression model of y = a + bX and the resultant r2 is very near zero, then one would be able to conclude that:
Dr. Bundy recently earned permission from the warden of a local prison to use prisoners to study the effects of the drug Zoloft on depression.
In a survey, 55% of the voters support a particular referendum. If 40 voters are chosen at random, and X is the number of voters that support this referendum, find the mean and variance of X.
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