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A hat contains 40 marbles. Of them, 18 are red and 22 are green. If one marble is randomly selected out of this hat.
a) What is the probability that this marble is red (round to two decimal places)?
b) What is the probability that this marble is green (round to two decimal places?
To estimate the prevalence of HIV, the State of New York implemented a policy of testing women who gave birth. The test that was used is known as ELISA; it is actually a test for the HIV antibody. Assume that ELISA has a sensitivity of 0.998 and a sp..
Are all the predictors significant in the presence of others? Use α= 0.05.- Based on the tests in part (b), what terms would you recommend for inclusion in the model?
Assume that a 95% confidence interval for the mean is 14.5
a medical device manufacturer claims to have developed a thin aicd that contains a mean of no less than 41 joules of
What is the probability that a randomly selected bag has between 1000 and 1200 chips? What is the probability that a randomly selected bag has fewer than 1000 chips?
Christofides' Traveling Salesman Heuristic) Consider a symmetric traveling salesman problem where the arc costs are nonnegative and satisfy the triangle inequality (cf. the preceding exercise).
POLITICS The 1992 U.S. Senate was composed of 57 Democrats and 43 Republicans. Of the Democrats, 38 served in the military, whereas 28 of the Republicans.
A student's final exam grade depends on how close the student sits to the center of the classroom during lectures. If a student sits r feet from the center of the room, the grade is a Gaussian random variable with expected value 80 - r and standar..
What is the probability that at least two men arrive before the second woman arrives and what is the probability that six fishes bite during the first two hours and what is the probability that he fails to catch any fishes during the first two hours?
sketch a venn diagram of these eventsberkeley and chelsea visited independently of one another.berkeley visited with
A lending institution supplied the following data on loan approvals by four loan officers. Conduct an appropriate Hypothesis test to determine whether the loan approval decision is independent of the loan officer reviewing the loan application.
Redesign each study to eliminate any confounds that you find. Write a short paragraph for each case below, identifying the confound and indicating how you would eliminate it.
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