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We polled a sample of 900 random people on whether they thought a candidate for a high government position deserves to be nominated. We found that 405 of the 900 people (or 45%) believe the candidate should not be nominated. What is the 95% confidence interval of the proportion of people not in favor of the nomination.
We want to poll a sample of random people on whether they thought a candidate for a high government position deserves to be nominated. Suppose roughly 45% of the population is not in favor of the nomination. If we want to construct a 95% confidence interval and we want our margin of error to be no more than 2%, what should be our sample size?
What is the probability he is two blocks or less (walking on streets) from the store? What is his average walking distance (using blocks-no "diagonals") from the store?
With reference to Exercise 71, what can we assert about the amount of time it takes a person to be served at the given restaurant if we use Chebyshev's theorem with k = 1.5? What is the corresponding probability rounded to four decimals?
What is the probability that a random sample of 16 people in the elevator will exceed the weight limit?
1. Assume that the interest rate in New Zealand is 9 percent. A U.S. firm plans to borrow New Zealand dollars, convert them to U.S. dollars, and repay the loan in 1 year.
for the following problems do the followinga draw thenbspscatter plotnbspfor the variables.b compute thenbspcorrelation
In a certain country the distribution of income for the whole population follows a slightly right skewed distribution. Problem five: Lila programs the computer to take one thousand random samples of size 30 from the population.
What is the probability that a customer is both a frequent shopper and sometimes purchases generic? products?
What correlation coefficient is appropriate for this type of data?
Raffle tickets numbered 1 through 30 are placed in a box. Tickets for a second raffle numbered 21 to 48 are placed in another box. One ticket is randomly drawn from each box. What is the probability that both tickets will be greater than 20 or les..
A random sample of 45 capsules was tested and produced a sample mean of 85.3% and a sample standard deviation of 1.1%.
Indicate which distribution to use in order to find confidence intervals for the unknown population mean from a random sample taken from the population
Given your findings in part a, determine any significant differences among the response means of the levels of factor A for level 1 of factor B.
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