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According to a survey of 25,000 ?households, 46% of the people watching a special event on TV enjoyed the commercials more than the event itself. Complete parts a through e below based on a random sample of ninepeople who watched the special event.
a. What is the probability that exactly three people enjoyed the commercials more than the? event?
The probability is
In n +m independent Bernoulli (p) trials, let Sn be the number of successes in the first n trials, Tm the number of successes in the last m trials.
Polls showed the two main candidates in the 2004 presidential election were nearly tied on the day before the election. To predict the winner a newspaper would like to have a poll that has margin of error less than 1%. Roughly how large a sample w..
question which is relatively better a score of 79 on a psychology test or a score of 38 on an economics test?
When calculating correlation coefficient, what does a value of -2 indicate? Strong negative correlation, Weak negative correlation.
four out of every 10 online homes in the u.s. have switched to broadband high-speed internet. two homes are randomly
Find the probability that on a given shift: (1) Exactly 2 workers will be absent; (2) More than 4 workers will be absent. [Given that e to the power of -3 is equal to 0.04979]
the amounts in ounces of juice in eight randomly selected juice bottles are15.2 15.7 15.9 15.9 15.1 15.5 15.7
What method has been used to transform Model 1 to Model 2? Equations for Model 1 and Model 2 are as follows:
The average U.S. family includes 3.17 persons.- Using a nondirectional hypothesis test and a level of significance of your choice, what conclusion would be reached?
Find a set of data of interest to you, such as rents from a newspaper or test scores from a class, with at least 12 numbers. Include the data with your answer.
If you must estimate the population mean within 2 days, how many outside salespeople should you sample? Use the 90 percent confidence level.
What is the probability that none of the three will be by the Beatles?- Suppose that one album is by the Doors. What is the probability that this album is not selected?
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