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the probability that any given person is mildly allergic to a certain drug is 0.03.what is the probability that none of three randomly chosen persons areallergic to this drug . what is the probability that at least one person is allergic to this drug.
Using random numbers of 0.1562, 0.9821, 0.3409, 0.5594, and 0.7758, compute the time required for each of five simulated maintenance checks of the airplaine's landing gear.
The best estimator or appreciative for the population proportion is 0.45. How large must the sample be?
Perform a contingency analysis on the data to determine if there is any dependency between the number of level of education attained by the father and the size of his family.
The mean life time of the sample of 160 tires will be less than 39,000 miles? Interpret the probability in terms of the truth of the manufacturer's claim.
The statistical analysis predicted that there would be 104 foxes. Calculate the residual for that data point.
What are the similarities and dissimilarities between a chi-square analysis and a correlation analysis? Suppose you conducted a study to see if there was an association between political party affiliation and whether or not someone voted.
A bowl contains 20 chips, of which 9 are red, 8 are white and 3 are blue. Six chips are taken at random and without replacement. Find the probability that each of the 6 chips is red.
This semester a sample of 45 students revealed an average cost of books of $395 per student. The Dean of Students believes that the costs are greater this semester. What is the test value for this hypothesis.
By using the 0.10 level of significance, is there evidence that the population mean is above the $300?
A bus company claims that the mean waiting time for a bus during rush hour in less than 7 minutes. A random sample of 20 waiting times has a mean of 5.2 minutes with a standard deviation of 2.1 minutes.
If the probability of no accidents during a 24 hour period is 0.1353, what is the mean number of accidents per 24 hour period?
Suppose that for a particular flight involving a jumbo-jet with 265 seats, the airline sells 278 tickets. What is the probability that the airline will not have enough seats for all the ticket holders who show for the flight?
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