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A multiple-choice test has 30 questions and each one has five possible answers, of which one is correct. If all answers were guesses, find the probability of getting exactly four correct answers
The average speed of greyhound dogs is about 18.8 meters per second. A particular greyhound breeder claims that her dogs are faster than the average greyhound. In a sample of 45 dogs, they ran, on average, 19.2 meters per second with a standard de..
A student wants their College to offer Kickboxing classes as a Physical Education class. To justify that the class is desired he surveys 200 students and finds that 56% would be interested in taking the class.
In a standard normal dist. what is the prob. of getting a value less than 1.63? How about between 1.13 and 1.86? How about greater than .58?
Make a decision about buying machinery. The stakeholders in the simulation have different opinions as to the proper course of action the organization should take.
Compute the mean, median, mode and standard deviation for the following discrete probability distribution.
a doctors office staff studied the waiting times for patients who arrive at the office with a request for emergency
Explain clearly why the matched pairs t test is the proper choice and do a complete analysis for the question that is posed here.
Assume the standard deviation of the distribution is 2.5 pounds. Find the probability that the mean of a sample of 55 families will be between 17 and 18 pounds.
If the population mean is estimated within two days, how many salespeople should be sampled?
How many questions must the test contain in order to reduce the standard deviation of Julie's proportion of correct answers to one-fourth its value for an 100-item test?
What is the best estimate of the average tread life in miles for the entire population of these tires?
Testing for population mean - How would this information be useful to you if you were the college register?
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