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Suppose the probability that a student passes a final examination in mathematics is .80, the probability that he passes a final examination in physics is .75, and the probability that he passes both finals is .60. What is the probability that the student will pass at least one of these final examinations?
An experimenter is randomly sampling 5 objects in order from among 49 objects. What is the total number of samples in the sample space?
Determine whether the following equations have a solution or not? Apply the discriminant, are the solutions real, repeated real, or complex?
The following are quality control data for a manufacturing process at Kensport Chemical Company. The data show the temperature in degrees centigrade at five point in time during a manufacturing cycle.
Find the difference between the actual y value and the predicted y value for each individual, square the differences and add the squared values to obtain ss residual.
A standard deviation of $1500. at the 0.01 level of significance, can it be concluded that state employees earn on average less than federal employees?
Use the normal distribution to approximate the desired probability. Find the probability that in 200 tosses of a fair die, we will obtain at exactly 30 faces.
The Swansons are planning to fly to Hawaii from Toronto with a stopover in Los Angeles. There are five flights they can take between Toronto and Los Angeles and ten flights between Los Angeles and Hawaii.
You have been asked to study the effects of an employee-wide training program, in a company of 500 employees, designed to reduce the amount of customer complaints.
Suppose that you select a 50 families sample. Which is the form expected from the distribution of the average or median of the sample?
A psychologist studied self-esteem scores and found the data set to be normally distributed with a mean of 50 and a standard deviation of 6. A raw score of 47 is associated with what percentile?
Given the following data on hotel check-ins for a 6-month period:
95% of breaking strengths will be contained between what two values symmetrically distributed around mean?
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