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The point of averages of a scatterplot of Y against X is (14, 1 ). The SD of X is 6, and the SD of Y is 7. The decimal fraction of points in the scatterplot whose X coordinates are between -4 and 32 and whose Y coordinates are between -34 and 36 is at least (Hint: Use Chebychev's inequality twice.)
A regional manager visits local fast-food franchises and evaluates the speed of the service. If the manager receives her meal within 45 seconds, the server is given a free movie-admission coupon.
A test consist of 30 multiple choice questions, each with five possible answers, only one of which is correct. find the mean and standard deviation of the number of correct answers.
A population consists of 15 items, 10 of which are acceptable. In a sample of 4 items, what is the probability that exactly 3 are acceptable? Assume the samples are drawn without replacement.
Briefly discuss a real-world example when the solution of a system of inequalities must be in the first quadrant?
What is the probability of this project being completed earlier than 19 days?
Given the following frequency distribution, find out the mean, variance, and standard deviation.
Marks on statistics midterm test are normally distributed with mean of 78 and a standard deviation of 6. Determine the probability that class of 50 has average midterm mark that is less than 75?
Normal distribution with mean 35 minutes and standard deviation 2 minutes. On 95% of occasions the mailing preparation takes less than _______ minutes.
Compute an F-statistic for each linear construct and determine its significance. Also, state what questions each of these contrasts address.
Sample data in a goodness-of-fit test are compared with __________. A. a predetermined or historical standard for the variable being studied
Chocolate bars produced by a certain machine are labeled with 16.0 oz. The distribution of the actual weights of these chocolate bars is Normal with a mean of 16.1 oz and a standard deviation of 0.1 oz. A chocolate bar is considered underweight if..
Start rolling dice until a particular number, say 3, is obtained, and keep track of how many rolls are necessary. Repeat 100 times. Then find the average.
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