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A simple random sample of 25 recent graduates from a particular college gives a sample mean starting salary of $24,000 with a sample standard deviation of $3,000. Build a 95% confidence interval for the mean starting salary of all graduates from this college. Interpret your result in words.
Playbill magazine reported that the mean annual household income of it's readers is $219,155. Assume this estimate of the mean annual household is based on a sample of 91 house-holds and based on past studies,
Based on these results, does te diet appear to be effective? Does the diet appear to have practical significance?
a standardized third grade reading test called the we can read test has a mean of 50 with a standard deviation of 10. a
How large should the sample be if I want to maintain a 95 percent level of confidence and suffer a maximum error of $2.00 in my estimate of the highest price consumers are willing to pay?
Confidence Intervals and Chi Square
Her mean waiting time was 7.4 minutes. Assume that the standard deviation has been historically known to be 2.2 minutes. At the .05 significance level, test the claim that the mean waiting time is less than 10 minutes.
the table below shows the political affiliation of randomly selected american voters and their positions on the school
The acceptance rate for applicants with similar qualifications is 30% for University X and 55% for University Y. What is the probability that Jim will be accepted by at least one of the two universities?
question the amount of time to complete a particular exam is believed to have a mean of 52 minutes and a standard
Write down the advantages and disadvantages of using computer software for decision making.
What does this data tell us by itself before we do anything with it such as doing hypothesis testing or comparing it to other data? How can this be used by the M&M company?
How much should you be willing to pay for this deal? Do you think you would actually pay that much? Why? Expected Value:? Pay it? Why?
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