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During a certain week, the mean price of gasoline in California was $4.117 per gallon. A random sample of 38 gas stations is selected from this population. What is the probability that the mean price for the sample was between $4.128 and $4.143 that week? Assume σ = $0.049. (Adapted from U.S. Energy Information Administration)
1.Distinguish some things to consider when writing a casual analysis 2.Analyze and discuss some important things to consider when writing a compare/contrast essay.
Consider a file which is marked as infected. Knowing that sometimes the test may be wrong, what is the probability that the file is indeed infected with the virus? You must explicitly show the steps you followed to arrive at your answer.
Categorize the following as discrete or continuous random variables.
Violence against women 2005.- Is there evidence that violence against women involves different weapons than other violent attacks in the United States?
question 1the monthly average sales of the smiling ninja computer company may be approximated to a normal distribution
1. Let X denote the mean of a random sample of size 100 from a distri bution that is x2(50). Compute an approximate value of Pr (49 X 51).
Assume that a population is normally distributed with a mean of 100 and a standard deviation of 15. Would it be unusual for the mean of a sample of 3 to be 115 or more? Why or why not?
recently a university surveyed recent graduates of the english department for their starting salaries. four hundred
If one man and one woman are chosen randomly from the company, what is the probability that only one of them is able to use a spreadsheet?
the probability that someone in the human population has blood type ab is about p .08 the probability that someone has
The best places in the United States to be a job seeker are state capitals and university towns, which are claimed to have jobless rates below the national.
What is indicated about the strength of the relationship?- What are the two possible values for the correlation coefficient for the two variables?
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