27 May Question 1. Question : In the application of Bayes’ Theorem the sample information
Question
1. Question : In the application of Bayes’ Theorem the sample information is combined with prior probabilities to obtain posterior probabilities.
Student Answer: True
False
2. Question : The actual weight of hamburger patties is an example of a continuous random variable.
Student Answer: True
False
3. Question : A student’s grade on an examination was transformed to a z value which is negative. Therefore, we know that he scored
Student Answer: higher than 16% of the class.
higher than 45% of the class.
above the first quartile.
below the mean.
above the mean but below the median.
4. Question : The expected value of a discrete random variable is:
Student Answer: ?x p(x)
n ?p ?q
?(x – µx)2 p(x)
5. Question : The following formula: P(A U B) = P(A) + P(B) – P(A ? B) represents
Student Answer: the conditional probability.
the addition rule.
independence.
the multiplication rule.
None of the above.
6. Question : A standard normal distribution has a mean of ____and standard deviation of ____
Student Answer: zero, zero.
zero, one.
one, one.
one, zero.
7. Question : A(n) __________ is a measure of the chance that an uncertain event will occur.
Student Answer: experiment
sample space
probability
complement
population
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