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Determine the two-tail critical values from the t distribution in each of the following cases:(a) 1-α=0.95, n=10, (b) 1-α=0.99, n=10, (c) 1-α=0.95, n=32 (d) 1-α=0.95, n=48(e) 1-α=0.90, n=16.
The area of study is Sampling Methods and the Central Limit Theorem. Consider the digits in the phone numbers on a randomly selected page of your local phone book a population.
(a) Set up the balance equations and solve for the steady-state probabilities, stating conditions for it to exist. (b) Find the expected waiting time of a customer from the time he arrives until he enters service for the ?rst time.
How large a sample is needed to estimate the true proportion of home owners who have vegetable gardens to within 0.04 with 98% confidence?
q1 if light bulbs have lives that are normally distributed with a mean of 2500 hours and a standard deviation of 500
Arrows. An Olympic archer is able to hit the bull s-eye 80% of the time. Assume each shot is independent of the others.
How did symbols of the Lost Cause, such as a Confederate Veterans' parade featuring pictures of Robert E. Lee and Jefferson Davis, serve the post-Reconstruction
In order to win the game, he must roll a "6" on the first roll and at least one of the other rolls. What is the probability he will win?
This weekend the team has two games against teams they are not very familiar with. Assuming that the ?rst team they play is a class 1 team with probability 0.6 and the second is, independently of the class of the ?rst team, a class 1 team with ..
Is there evidence that the population mean amount is different from 8.17 ounces? (Use a 0.05 level of significance) Determine the p-value and interpret its meaning.
How many bulbs should be tested so that we can be 90% confident that the estimate of the mean will not differ from the true mean life by more than 10 hours?
Use computer simulation to find the expected value of the payoff. What is the probability that your grand total will be 25 or more points.
a set of test scores is normally distributed with a mean of 100 and a standard deviation of 15. if cases are drawn
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