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Imagine the following game of chance. There are four dollar bills on the table. Your roll a fair die repeatedly. Every time you fail to get a six, one dollar bill is removed. When you get your first six, you get to take the money that remains on the table. If the money runs out before you get a six, you've lost and the game is over. Let X be the amount of your reward. Find the range and the probability mass function of X. Check that the p.m.f. you give adds up to 1.
Think about a density curve that consists of two line segments. The first goes from the point (0, 1) to the point (0.7, 1). The second goes from (0.7, 1) to (0.9, 2) in the xy-plane. What percent of observations fall below 0.70?
given a total study size of n and comping g levels of the explanatory factor the numerator degrees of freedom and the
It is generally believed that electrical problems affect about 14% of new cars. An automobile mechanic conducts diagnostic tests on 128 new cars on the lot. What is the standard deviation for the sample proportion?
1. jon works as a sanitation engineer for a zoo. every day he goes to work he feels like he is shoveling a great
in a study subjects are randomly assigned to one of three groups control experimental a or experimental b. after
Josh makes three word-processing errors per page on the first draft of his reports for work. What is the probability that on the next page he will make
a test has a mean of 104 and a standard deviation of 16. we want to be 98 certain that we are within 4 points of the
the operationalization of a construct means that there must be looked for as many related dimensions and elements of
Distributed with a mean of 9.5 years and a standard deviation of 1.8 years. Find the replacement time that separates the top 18% from the bottom 82%.
Use the continuity correction and describe the region of normal curve that corresponds to the indicated binomial probability. The probability of more than 50 right answers.
assume that any single labrotory test in a 3 test battery obtained from healthy volunteers has a 5 chance of falling
in a simple linear regression based on 30 observations the following information is provided y-6.921.35x and se2.78.
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