Report confidence interval with highest possible level
If a higher confidence level means that we are more confident about the number we are reporting, why don't we always report a confidence interval with the highest possible confidence level?
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Determine the probability of a crash with at least one fatality if a driver drives while legally intoxicated (BAC greater than .09).
How much variability should they expect to see in the mean number of chocolate chips in random samples of 22 chocolate chip cookies?
Margaret owned an antique store that specialised in rare porcelain dolls. When she opened the business in 1989, it was at a shop in an eastern suburb of Melbourne.
Calculate the mean, median, and standard deviation for ounces in the bottles.
Write the null and alternative hypotheses in words and using symbols for each of the following situations.
A food safety inspector is called upon to investigate a restaurant with a few customer reports of poor sanitation practices. Which error is more problematic for the restaurant owner? Why?
Find the probability that a randomly selected person a) Consumes less than 224 pounds per year b) Consumes between 216 and 220 pounds per year
Perform a hypothesis test and state your conclusion. Calculate a 90% confidence interval for the average amount of savings of all customers who switch their insurance.
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