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In a survey of 2365 adults, a proportion of 1320 said they worry about zombies.
A.) Find p^ and q^.
B.) With C=0.99, construct the confidence interval for the population
Show the sampling distribution of p. (b) What is the probability that the poll will provide a sample distribution within 0.02 of the population proportion?
A consumer advocacy group is doing a large study on car rental practices. Among other things, the consumer group would like to do a statistical test regarding the mean monthly mileage
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question what type of educational background do ceos have? in one survey 344 ceos of medium and large companies were
Describe whether the data appear to be approximately normally distrusted by .. a. Comparing data characteristics to theoretical properties.
You have been asked to study the effects of an employee-wide training program, in a company of 500 employees, designed to reduce the amount of customer complaints.
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..
of employees in a particular industry 60 are female. if employees are selected one at a time stopping as soon as a
A sample of 93 IQ scores was randomly selected from a certain population. At the 0.03 level of significance, test the hypothesis that the population has a mean IQ of 105.
question 1 the gallop poll folks found that 27 of adults surveyed national survey said that they had been in a
consider a normally distributed random variable x with mean of 8 and a variance of 4. what is the probability that x
o test the notion that alcoholics are socially isolated 280 adults were randomly selected and each was classified as a
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