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In an exam, an instructor plans to give those students in the top 5% an A. If the average score on this exam is 75 with a standard deviation of 8, then what would be the minimum score for an A? Assume normality for the distribution of scores.
a test for breast cancer correctly classifies 95 of malignant tumours as malignant but also incorrectly classifies 1 of
suppose that two players a and b are trying to throw a basketball through a hoop. the probability that player a will
What is the porbability that less than 20 programmers have had experience in computer programming before being hired.
Why is the median price used to reflect average home prices in most areas, rather than the mean or mode? Should all people have similar houses or is it fair that some houses are much more expensive than others? Why or why not
Arrows. An Olympic archer is able to hit the bull's-eye 80% of the time. Assume each shot is independent of the others.
Construct a hypothesis test to determine whether the average weight of a Smoky Bear moving van is more that 12,000 lb. Us a 5% level of significance.
Manufacturing and Product Development Two different machines in a manufacturing facility are designed to fill cans with 280 grams of Tang orange-flavored drink.
Draw a picture of the possible sample proportions. Illustrate where the sample proportion of .17 falls on the picture. Use this to confirm your answer.
A student receives the following? grades, with an A worth 4? points, a B worth 3? points, a C worth 2? points, and a D worth 1 point.
What are various non-parametric tests utilized in business decision making? Give an example of each test with an appropriate business situation.
We like to determine the current percentage of households using e-mail. How many households must be surveyed to be 90% confident that the sample percentage.
hannah dakotas experiment obtained reaction time data using a factorial design with two independent variables. she
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