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A fair coin is flipped indefinitely. What is the probability of
(a) at least one head in the first n flips;
(b) exactly k heads in the first it flips;
(c) getting heads in all of the flips indefinitely?
Again using the Wall Street Journal as a source of data, determine whether there is a linear correlation between morning and afternoon price quotations in London for an ounce of gold (for the same day). Any ideas?
a certain disease is found in one person in 5000. if a person does have the disease the test will show a positive
a magazin reported that 6 of american drivers read the newspaper while driving. if 300 drivers ar selected find te
Based on the results of the T Test for Dependent Means, what would you conclude about the effects of stress on the level of beta-endorphins in the blood
suppose x1 x2 ... xnnbsp is random sample from a distribution with the ff. pdfnbsp fx 2xnbsp oltxlt1find the
A correlation coefficient is a number that looks like what - Which of the following correlation coefficients shows an inverse relationship?
Possible test scores could range from 0 to 500. Assume that the scores are normally distributed. Find the probability that a student had a score higher than 320.
From a random sample of 88 male students at Hope College, 14 were left-handed. Using the theory-based inference applet, determine a 99% confidence interval
What examples of companies successfully or not-so-successfully implementing
At times we can generate a regression equation to explain outcomes. For example, an employee's salary can often be explained by their pay grade, appraisal rating, education level, etc.
Suppose the value of the test statistic is z = 2.08. What is the p-value?
How long would it take to estimate the % of entries having errors using a random sample big enough to get a margin of error less than 2%?
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