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Based on a Saint Index survey, when 1000 adults were asked to identify the most unpopular projects for their hometown, 54% included Wal-Mart among their choices. Consider the probability that among 30 different adults randomly selected from the 1000 who were surveyed, there are at least 18 who include Wal-Mart. Given that the subjects surveyed were selected without replacement, are the 30 selections independent? Can they be treated as being independent? Can the probability be found by using the binomial probability formula? Explain.
Suppose X is a Gaussian (1, 1) random variable and K is an independent discrete random variable with PMF
A pair of dice is rolled. The sum of the faces on top is observed. What are the expectation, variance, and standard deviation of the observed sum? The Expectation and Variance Template attached to the main posting is optional and recommended.
for each of the following variables determine whether the variable is categorical or numerical. if the variable is
Use .05 significance level to test the claim that blood pressure levels for women differs from the blood pressure levels of men.
six 9 volt batteries are put on accelerated test until they fail. the variable recorded is hours of continuous use.
What is the probability that none of the 5 motor vehicles will be stolen?- What is the probability that all 5 motor vehicles will be stolen?
You will want to use software to find the regression equation, either a TI calculator or Statdisk or other software you have found useful. The sales of a company (in million dollars) for each year are shown in the table below.
If the proposed textbook receives a favorable review, how should the editor revise the probabilities of the various outcomes to take this information into account?
What is the probability that none of the three parents condones spanking as a regular form of punishment for their children? Give the mean and standard deviation of x. Interpret the results.
In one of the sections, computer-assisted instruction and review software is utilized; in the other section, it is not. All students are given the same final examination at the end of the semester. Does this represent a designed experiment? Expla..
a sample of 20 students who had recently taken elementary statistics yielded the following information on brand of
At the .01 significance level, is there a relationship between job pressure and age?
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