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Find the indicated probabilities using the geometric distribution or Poisson distribution. Then determine if the events are unusual. If convenient, use a Poisson probability table tor technology to find the probabilities.
A newspaper finds that the mean number of typographical errors per page is three. Find the probability that:
(a) Exactly five typographical errors are found on a page,
(b) At most five typographical errors are found on a page, and
(c) More than five typographical errors are found on a page.
Exchange ("the big board") and five stocks listed on NASDAQ. At the .10 significance level, can we conclude that the annual rates of return are higher on the big board?
james w. has a portfolio that includes 20 shares of disney and 30 shares of amazon. the price of disney stock is
Create a research question for which the appropriate test of the statistical hypothesis would require the use of a z-score.
The sample mean life is 5.5 years with a standard deviation of 0.6 years. If you were constructing a 99% two-sided confidence interval estimate, the lower limit would be?
Find the maximum total allowable weight if you want a 0.975 probability that this maximum will not be exceeded when 16 males are randomly selected.
Calculate the standard deviation for this data = since it is a case of grouped data with classes. use group or class midpoints in the formula in place of x values.
The number of passengers on the Carnival Sensation during one-week cruises in the Caribbean follows the normal distribution.
Probability based on binomial distribution - evaluate the probability of x successes in the n independent trials of the experiment.
A document claims that 56.5% of UVA undergraduates are female. To test this claim, a random sample of 240 UVA undergraduates was selected. In this sample, 58.8% were female. Is there sufficient evidence to conclude that the document's claim is ..
With any statistical model, we assess the fit: Does the model accurately depict the truth? Explain how one of the following helps assess the "fitness" of the mean.
Baseball games are uniformly distributed between 160 minutes and 240 minutes. What is the probability that a 9-inning game will last between 180 and 220 minutes?
Household income does not tend to follow a normal distribution in a particular state, yet average income is approximately $45,000/year in this state, with a standard deviation of about $9000.
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