A civic organization includes 200 members, who have an average income of $58,000, with a standard deviation of $10,000. A simple random sample of n = 30 members is selected to participate in the annual fund-raising drive. What is the probability that the average income of the fund-raising group will be at least $60,000?
Answer to relevant QuestionsOf the 217 airports available for public use in Belgium, 132 are paved. For a simple random sample of n = 50, what is the probability that at least 22 of the airports in the sample will be paved? Using the procedures in Computer Solutions 8.1 as a general guide, simulate 150 simple random samples of size n = 4 from a normal distribution with a mean of 80 and a standard deviation of 20. Determine the mean and the ...When a production machine is properly calibrated, it requires an average of 25 seconds per unit produced, with a standard deviation of 3 seconds. For a simple random sample of n = 36 units, the sample mean is found to be ...In the 2000 census, the so-called “long form” received by one of every six households contained 52 questions, ranging from your occupation and income all the way to whether you had a bathtub. According to the U.S. Census ...A population is approximately normally distributed and the sample size is to be n 5 40. What additional factor must be considered in determining whether to use the standard normal distribution in constructing the confidence ...
Post your question