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Question: In Exercise we asked (among other things), if a student knows 80% of the material in a course, what is the probability that she answers a question correctly on a 100 question True-False test (assuming that she guesses on any question she does not know the answer to)? (We assume that she knows what she knows, that is, if she thinks that she knows the answer, then she really does.) Show how we can use a probability tree to answer this question.
Exercise: Sometimes information about conditional probabilities is given to us indirectly in the statement of a problem, and we have to derive information about other probabilities or conditional probabilities. Here is such an example. If a student knows 80% of the material in a course, what do you expect her grade to be on a (wellbalanced) 100 question short-answer test about the course? What is the probability that she answers a question correctly on a 100 question true-false test if she guesses at each question she does not know the answer to? (We assume that she knows what she knows, that is, if she thinks that she knows the answer, then she really does.) What do you expect her grade to be on a 100 question True-False test to be?
Suppose that the null hypothesis is rejected and that an alternate hypothesis is accepted. Discuss the conclusion as a type I error, a type II error, or a correct decision-if in fact the defendant is innocent.
Prepare appropriate frequency distribution, represent above data by suitable graph - Plot these data and comment on the nature of relationship between the two variables under consideration.
Calculate the horizontal component of the initial velocity of the shell.
a popular flashlight that uses two d-size batteries was selected and several of the same models were purchased to test
For a regional survey of suburban households to obtain data on television viewing habits, a statistical sample of suburban areas is first selected. Within the chosen areas, statistical samples of whole blocks are selected; and within the selected..
I have been asked to suppose that faculty at my college are assigned overload courses hence additional compensation beyond the required contract hours based on seniority.
Consider the following situations that involve multiple objectives: a. Suppose you want to go out for dinner. What are your fundamental objectives? Create a fundamental-objectives hierarchy.
a study of 35 browns gerbils showed that their average weight was 4.7 ounces. the standard deviation of the population
an entomologist writes an article in a scientific journal which claims that fewer than 20 in ten thousand male
Rose's garden is a square with sides of length x feet. Next spring she plans to make it rectangular by lengthening one side 5 feet and shortening the other side by 5 feet. What polynomial represents the new area?
If the trash ag manufacturer hopes to obtain a sample mean that is at least 50 pounds which sample size n=5 or n=40 would be best.
Health care providers and other interested parties must continuously look for ways to manage limited resources while improving quality and promoting patient safety.
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