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On a test, a sample of 5 students has a mean score of 78. The scores of four students of them are: 87, 81, 76, 53. Find the test score of the fifth student and standard deviation of this sample.
Statistics and Probability, Statistics
A media rental store rented the following number of movie titles in each of these catagories: 160 horrors, 242 drama, 114 mystery, 308 romance, and 134 comedy. If a person selects a movie to rent, find the probability th ...
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The Torval Company made a credit sale of $15,000. The invoice was sent today with the terms, 3/15 net 60. This customer normally pays at the net date. If your opportunity cost of funds is 9% the expected payment is worth ...
A logging contractor has three feller bunchers. On any given day, each machine has a 90% chance of working. The contractor is considering buying a fourth feller buncher to offset the possibility of none of the machines o ...
The mean of a population of raw scores is 50 (ox=18). What is the probability of randomly selecting a sample of 40 score having a mean above 46?
The probability that a student passes a class is p(P) = 0.59. The probability that a student studied for a class is p(S) = 0.55. The probability that a student passes a class given that he or she studied for the class is ...
A student must answer 6 multiple choice questions for a test, but the student did not study well. There are 6 answers per question, but only one is correct. If the student randomly guesses on each questions, what is the ...
When Carolina's house burned down, she lost household items worth a total of $145,000. Her house was insured for $245,000, and her homeowner's policy provided coverage for personal belongings up to 70 percent of the insu ...
1) Suppose we want to see if American children have higher levels of cholesterol than the average child (i.e., in the entire world - the total population). We find that the population average for cholesterol for children ...
The rate of inflation in year 1 is expected to be 1.4%, year two is 1.8%, and years three through five is expected to be 2%. Assume the real risk-free rate, r*, is 3% for all maturities. What should the yield to maturity ...
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