Suppose a random sample of 86 items has been taken from a population and 45 of the items contain the characteristic of interest. a. Use this information to calculate a 90% confidence interval to estimate the proportion of the population that has the characteristic of interest. b. Calculate a 95% confidence interval. c. Calculate a 99% confidence interval. d. As the level of confidence changes and the other sample information stays constant, what happens to the confidence interval?
Suppose a random sample of 86 items has been taken from a population and 45 of the items contain the characteristic of interest.
a. Use this information to calculate a 90% confidence
b. Calculate a 95% confidence interval.
c. Calculate a 99% confidence interval.
d. As the level of confidence changes and the other sample information stays constant, what happens to the confidence interval?
(Round the intermediate values to 2 decimal places, e.g. 0.25. Round your answers to 2 decimal places, e.g. 0.25.)
a. enter the lower value of the interval ≤ p ≤ enter the upper value of the interval
b. enter the lower value of the interval ≤ p ≤ enter the upper value of the interval
c. enter the lower value of the interval ≤ p ≤ enter the upper value of the interval
d. All other things being constant, as the confidence increased, the width of the interval select an option .
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