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Suppose that a claim is made that the average billionaire is 60 years old or younger.The following is a random sample of billionaires' ages, 80, 70, 76, 54, 59, 52, 74, 64, 76, 67, 39, 67, 43, 62, 57, 91, 55.Conduct the test using the 0.05 level of significance.
Determine the event that the sum of the numbers falling uppermost is less than or equal to 7
Find each value requested for the distribution of scores in following table. For the following scores the lowest value is x=13 place the scores in a frequency distribution table using.
Since they will be multiplying this average by the total number of customers to get an overall forecast, they would like to accurately estimate this average with a margin of error of less than $4000.
Superior Medical System's 2005 balance sheet showed total common equity of $2,050,000. The company had 100,000 shares of stock outstanding which sold at a price of $57.25 per share.
Coke cans: n=36, mean of values in sample = 12.19 oz., s= 0.11 oz. Test the claim that the mean equals 12 oz. Use a significance level of alpha = 0.02.
Six people have declared their intentions to run for a county commission seat in the next general election. A political poll is conducted three-quarters of the way into the campaign to determine if there are any clear preferences on the part of th..
Apply Scheduling Theory in order to optimize a schedule of events and reduce lost productivity
Carry out the ANOVA and, if essential, post-hoc comparisons. Make a graph to represent group differences, and interpret ANOVA in a paragraph written in APA style.
Among coffee drinkers, men drink a mean of 3.2 cups per day with a standard deviation of 0.8 cups. assume the number of coffee drinks per day follows a normal distribution.
Using the original data, estimate the population standard deviation with 90% probability.
A cognitive psycholgist believes that a particular drug improves short-term memory. The drug is safe, with no side effects. An experiment is conducted in which 8 ramdomly selected subjects are given the drug and then given a short time to memorize..
You are a researcher who is interested in the effect of child care on the attachment which develops between an infant and a caregiver.
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