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A class of first graders includes 7 girls and 14 boys, 2 students are selected at random for the teacher to help on a given day. What is the probability that both are boys?
Are you doubtful of any of these data points? if so why does there show to be a linear relation between degree of stenosis and nuber of reactive nuclei?
The probability that a business owner will go bankrupt in it first year is .34. For 25 like businesses, find the probability first by using the binomial probability formula, and then by using the normal approximation.
According to an exit poll taken by CNN during the 2008 Democratic Primary in Connecticut, 552 registered voters voted for Hilary Clinton and 598 for Barack Obama. Would you have been willing to predict Obama as the winner?
compute the probability of being dealt at random and without replacement a 13-card bridge hand consisting of 13 cards
If you select a random sample of 16 cups and are willing to have an α = 0.05 risk of committing a Type I error, compute the probability of a Type II error (β) if the population mean amount dispensed is actually:
Compute the average of the areas. How does this compare with your guess? How does it compare with the averages of the judgment samples for the others in your group?
In an analysis of variance problem involving 3 treatments and 10 observations per treatment, SSE = 399.6. The MSE for this situation is:
The thickness of a flange on an aircraft component is uniformly distributed between 0.95 and 1.05 millimeters. Determine the cumulative distribution function of flange thickness.
Draw a standard normal curve and shade the area under the curve that represented the answer to the question; do this on scratch paper and provide a one-sentence description for the assignment).
Test the claim at alpha-.05 that the average wage has not changed by finding the p-value for the test.
Construct a 99% confidence interval for the difference in the proportions of college freshmen and sophomores who purchased used textbooks.
Formulate the null and alternative hypotheses for this application.
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