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If a gambler rolls two dice and gets a sum of four, he wins $10; and if he gets a sum of three, he wins $25. The cost to play the game is $5. What is the expectation of this game?
Place your answer, rounded to two decimal places, in the blank. However, if the expected payoff is negative be sure to use a minus sign. For example, -1.23 would be a legitimate entry.
How could your answer in question (a) change if you knew returns followed a skewed distribution instead of a normal distribution? Explain briefly.
Find the probability that the student 's test score is more than 39.8. Find the probability that the student's test score is between 33.5 and 41.9.
At one excavation site 8641 pot shards have been found that not yet been cleaned and identified. What is the probability that:
The director of admissions at a large university advises parents of incoming students about the cost of textbooks during a typical semester.
If the lowest score you can earn and still be eligible for employment is an 84, what is the mean score for the exam? Round your answer to the nearest tenth.
Find the test statistic value for testing the equality of population means of the two samples.
Did you find any outliers on the dependent variables that were due to errors of coding? If so, what and why? How would you correct an error of coding?
The trail was repeated 54 times with 22 correct identifications and 32 wrong identification.
The National Highway Association is studying the relationship between the number of bidders on a highway project and the winning (lowest) bid for the project.
A computer password consists of four characters. The characters can be one of the 26 letters of the alphabet. Each character may be used more than once. How many different passwords are possible?
The weights (in grams) of four different colors of M&M candies are given below, along with the mean weight and variance of each color, and the variance of the sample means.
For a standard normal curve, find the z-score that separates the bottom 90% from the top 10%.
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