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In a survey of 1116 people, 866 people said that they voted in a recent presidential election, Voting records show that 75% of eligible voters actually did vote. Given that 75% of eligible voters actually did vote,
(a) find the probability that among 1116 randomly selected voters, at least 866 actuall did vote.
(b) What do the results from part (a) suggest?
For machine gun ammunition to be acceptable, the US Army requires that 96 percent of rounds fired hit a specified target. The test is to fire a 50 round burst at the target and observe whether this condition is met.
Sstandard deviation of the test scores are 74 and 2, respectively, and the distribution of scores is bell-shaped and symmetric. Suppose the trainee in question received a score of 69. Compute the trainee's z-score.
an airline reports that it has been experiencing a 17 rate of noshow on advanced reservations. among 150 advanced
Here is a simple probability model for multiple-choice tests. Assume that each student has probability p of correctly answering the question chosen at random from universe of possible questions.
A researcher reports an F-ratio with df = 3, 36 from an independent-measures study. How many treatment conditions were compared in the study?
if 30 claims are selected, find the probability that 15 will contain 0 errors, 8 will contain 1 error, 5 will contain two errors and 2 will contain 3 errors.
Suppose that $126,000 is to be allocated for advertising, research, and investment in the ratio 10:4:2. How much money will be allocated for each?
inclusions are defects in poured metal caused by contaminants. the number of large inclusions in cast iron follows a
Name an application for the use of ANOVA. This can be in a professional setting, hobby, or something you find on the internet. What are some business situations where ANOVA would be more appropriate than a Z or T test?
suppose we draw two tickets from a hat that contains tickets numbered 1234. let x be the 1st number drawn and y be the
consider the following statement each culture has its own norms of etiquette. in a diverse society like america as well
The distribution of meansdistribution and the distribution of means, showing the t score and cutoff points for significance. (c) Explain your answer to someone who has never taken a course in statistics.
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