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In any given month, the pro shop at a golf club can either sell 36 dozen balls or 21 dozen balls. The probability that the pro shop sells 36 dozen balls is 0.59; otherwise, the pro shop sells 21 dozen balls. What is the standard deviation of the number of balls the pro shop sells in a month? (please round your answer to 2 decimal places)
attempting to analyze the relationship between advertising and sales the owner of a furniture store recorded the
Determine equation in point-intercept form for line that goes through points (8,-1) and (4,3).
What is your initial perception of this information? What are other ways, beyond looking at the p-value alone, you could use to try to interpret what this outcome of r(2398) = -.21 tells us about the relationship between length of time taking drug..
Pollsters attempt to find out whether or not person is a "likely voter" before they count their opinion in poll. If we suppose 40% of registered voters will really vote.
Water carriers played a dominant role in the transportation system of the United States in the 18th and 19th centuries. Why has their relative position declined during the 20th century? Are they still an important component of the total transporta..
Suppose R is an orthogonal n×n matrix. If U is an n×1 vector of IID N(0, σ2) variables, show that RU is an n×1 vector of IID N(0, σ2) variables. Hint: what is E(RU)? cov(RU)? ("IID" is shorthand for "independent and identically distributed.")
The article "Can We Really Walk Straight?" (American Journal of Physical Anthropology [1992]: 19-27) reported on an experiment in which each of 20 healthy men was asked to walk as straight as possible to a target 60 m away at normal speed. Constru..
What is the probability that none of the three parents condone spanking as a regular form of punishment for their children?
It was suggested that the number of particles in a randomly selected interval might follow a Poisson distribution. Assuming a Poisson distribution to be an appropriate model for the data, use two methods to find an approximate 95% confidence inter..
At the 0.05 significance level, can he conclude that number of absences has declined? calculate approximately the p -value.
Effect of Screening Mammography on Breast-Cancer Incidence
Solve the problem: According to police sources a car with a certain protection system will be recovered 94% of the time. Find the probability that 4 of 8 stolen cars will be recovered.
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