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In a survey of 3135 adults, 1438 say they have started paying bills online in the last year.
Construct a? 99% confidence interval for the population proportion. Interpret the results.
A? 99% confidence interval for the population proportion is ( ,). ?(Round to three decimal places as? needed.)
Assume that results of survey were used to create seperate 99% confidence intervals for boys and girls. would the margins of error be same as, larger , or smaller than that for question one?
Find the test statistic P-value, and critical value, and state the final conclusion.
in the basic economic order quantity eoq model a doubling of estimated annual demand would lead to what change in
Federated South Insurance Company has developed a new screening program for selecting new sales agents. Given the expected improvement, what is the probability that 19 or more reach their minimum sales goals
A researcher believes that the percentage of people who exercise in California is greater than the national exercise rate. The national rate is 20%.
Estimate the probability that if someone tests negative, they do not have the disease.
1. Consider the stem-and-leaf diagram of What family of distributions is suggested by the diagram?
A standard deviation of 350 hours. the manufacturer is considering a warranty. what proportions of the screens have a life between 1500 and 2500 hours?
The rail shuttle cars at Atlanta airport have a dual electrical braking system. A rail car switches to the standby system automatically if the first system.
Men are usually the snow blower accident victims. There are several factors to consider, but we're going to choose the level of operating experience between men ages 21-35.
in a study subjects are randomly assigned to one of three groups control experimental a or experimental b. after
use the given information to find the minimum sample size required to estimate an unknown population mean. how many
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