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Consider college officials in admissions registration, counseling, financial aid campus ministry, food services, and so on. How much money do these people make each year? Suppose you read in your local newspaper that 45 officials in student services earn an average of $50,340 each year. Assume that the standard deviation is $10,780 for salaries of college officials and student services. Find a 90% confidence interval for the population mean salaries of such personnel. Round your answer to the nearest dollar and don;t forget to use the $ sign.
A bag of jelly belly candies contains the following colored jelly beans: red (10), blue (2), orange (5), brown (21), green (0), and yellow (18). Construct the probability distribution for x.
A small New England college has a total of 400 students.The Math SAT is required for admission, and the mean score of all 400 students is 620. The population standard deviation is found to be 60. The formula for a 95% confidence interval yields th..
An airline finds that 5% of the persons making reservation on a certain flight will not show up for the flight. If the airline sells 180 tickets for a flight with only 175 seats,
Consider the following continuously operation job shop. Inter arrival times of jobs are described as follows: What is the average time for the 10 new jobs?
The author collected data consisting of the month of birth of actors who won Oscars. Use a 0.05 significance level to test the claim that Oscar winning actors are born in different months with the same frequency.
a) What is the probability of getting four hits in a particular game? (Round your answer to 3 decimal places.) b)What is the probability of not getting any hits in a game?
Some defendants in criminal proceedings plead guilty and are sentenced without a trial, whereas others who plead innocent are subsequently found guilty and then are sentenced.
Calculate power of test if researcher uses a sample of n = 16 individuals.
The overall average for the samples is 17 ounces. The range is only 0.5 ounce. Determine the upper and lower control-chart limits for averages for the boxes of cereal.
find probabilty that the average of those counts is more than 83.0 mosquitoes per square meter. Assume the variable is normally distributed.
Suppose that a model for the joint distribution of these rvs is a bivariate normal distribution.
They hope to use a sample size such that, with probability 0.95, the error will not exceed 0.04. What sample size will ensure this, regardless of what sample proportion value occurs when they gather the sample?
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