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A raffle has a grand prize of a European cruise valued at $6500 with a second prize of a Las Vegas getaway valued at $700. If each ticket costs $3 and 8600 tickets are sold, what are the expected winnings far a ticket buyer? Express to at least three decimal place accuracy in dollar form (as opposed to cents).
Assume the population is normally distributed, the confidence level is 95%, n = 12, and σ is unknown.
Ball bearings are manufactured with a diameter of 5 mm. But the process has variation, so the diameter is normally distributed with a mean of 5 mm and a standard deviation of .02 mm. A) What proportion of ball bearings are more than 5.03 mm?
(a) Using the level of significance a = 0.10, test whether the first digits in the allegedly fraudulent checks obey Benford's Law. What is the null hypothesis?
Analysis of Variance (ANOVA) is used to test the equality of the means of three or more groups based on sample data. ANOVA is really a test of means even though it sounds like a test of variance.
the image of the public library is constantly changing and their online services continue to grow. usage of the
Find the probability that the mean GPA of a random sample of 20 students selected from this university is 2.95 or lower.
List one unclear concept regarding regression and provide an example from your personal or work life where regression could be used to show a relationship between two variables.
Find the probability that a random sample of size 54, selected with replacement, will yield a sample mean greater than 4.1 but less than 4.4. Assume the means to be measured to the nearest tenth.
How do you solve this problem: a researcher conducted a study of the access speed of 50 hard drives and concluded that his maximum error of estimate was 24.
statistics released by the national highway safety administration show that on an average weekend night in urban areas
Given the large difference between the two measures of central tendency, which of the two would you rely on in describing the average claim cost and why?
the accounting department analyzes the variance of the weekly unit costs reported by two production departments. a
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