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1. See the 2 by 2 table. Say the context is that on a Saturday a store has 85 customers who ask a sales rep about a particular product. In the table you see a breakdown of those who had not seen an advertisement for the product and those who had and those who did not or did make a purchase.
Had not seen ad Y1 Saw ad Y2Did not purchase X1 4 13Made purchase X2 16 52
P(X2 Y1) =P(X1 or Y2) =P(X1 given Y2) =
While it seems that seeing the ad generated a great deal of traffic, is the notion of making a purchase independent or dependent on the idea of seeing the ad? Explain your answer.
2. All bags entering a research facility are screened. Ninety-seven percent of the bags that contain forbidden material trigger an alarm. Fifteen percent of the bags that do not contain forbidden material also trigger the alarm. If 1 out of every 1,000 bags entering the building contains forbidden material, what is the probability that a bag that triggers the alarm will actually contain forbidden material?a. 0.00097b. 0.00640c. 0.03000d. 0.14550e. 0.97000
What is the mean of the sampling distribution of the (sample proportion) and what is the standard deviation of the and describe the sampling distribution of p
Can the five-year rate of return be estimated based on the assets of the Fund? Determine the regression equation. Use assets as the independent variable.
A steel ball weighing 128 pounds (mass= 4 slugs) is suspended from a spring. This stretches the spring 128/485 feet. The ball is started in motion from the equilibrium position with a downward velocity of 9 feet per second.
what are some examples of two measurement-level quantitative variables that are likely to be correlated because they
How many nickels does a coin counter manufacturer need to weigh so that she can be 98% confident that her sample mean is within 25 milligrams of the true average weight of a nickel?
Find the probability that the age of a randomly selected CEO will be between 56-57 y/o. (round to 4th decimal) The probability a randomly selected CEO will be between 56-57 y/o is?
the probability that a 52-year-old white male will live another year is .99386. what premium would an insurance company
Estimated the probability that among 75 randomly selected students, at least 20 of them score greater than 78.
Since he has not attended class recently, he doesn't know any of the answers. Assuming that he guesses on all 10 questions, find the following: What is the probability that he will answer all ten questions incorrectly?
A share tipping service claims that its selections give an average return of 10% if held for 12 months. An investor wants to investigate this claim and records the returns of the last 20 shares that have met the 12 month period.
Formulate a linear programming model for this problem.
DAY 1. Multiply the threeĀ matricesĀ together inĀ orderĀ (A*B*C) to get a fourth matrix 'D'. What is the fourth matrix? DAY 2. Multiply the fourth matrix by the scalar 6 to get a fifth matrix E.
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