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A cabinet has 3 identical drawers. One drawer contains 2 gold coins, another drawer has a gold coin and a silver coin, and the third drawer has 2 silver coins. You select a drawer at random and take one of the coins, also at random.
(a) What is the chance you get a gold coin?(b) Given that you got a gold coin, what is the chance the other coin in the drawer you selected is also gold?
Ten pairs of points yielded a correlation coefficient of 0.790. If α = 0.05, which of the following statements is correct if H0 = ρ0?
Explain probability distribution of X (name and parameters).
A humane society claimes that less than 36% of U.S. households own a dog. In a random sample of 396 U.S. households, 151 say they own a dog. At x=0.04, is there enough evidence to support the society's claim?
Calculate the mean and standard deviation for this set of data. Convert your answer back to dollars and cents and give the correlation value between number of beers consumed and BAC?
What is the probability that the drug will be effective for 3 hours or more?
An anatomy teacher hypothesizes that the final grades in her class are distributed as 10% A's, 23% B's, 45% C's, 14% D's, and 8% F's. At the end of the semester, she has the following grades.
Test the mean cholesterol content in the egg is greater than 2.5 percent
Here are numbers of right identifications by 24 children in Active group: 24 children in Passive group had these counts of correct identifications: Is there good evidence which active learning is superior to passive learning?
The researcher found that Lincoln's educational score did not correlate with the expected variables.
The heights were normally distributed, with a mean of 67.8 inches and a standard deviation of 4.0 inches. A study participant is randomly selected. Find the probability that his height is less than 65 inches.
Following are the data collected. Should the head of the Bureau be concerned about the time taken at lunch by employees? Why?
A sample of 500 respondents in a large metropolitan area was selected to study consumer behavior. Among the questions asked was "do you enjoy shopping for clothing?" Of 240 males, 136 answered yes.
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