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A sample of 50 golfers showed that their average score on a particular golf course was 90 with a standard deviation of 6. Answer each of the following (show all work):
(A) Find the 95% confidence interval of the mean score for all 50 golfers.(B) Find the 95% confidence interval of the mean score for all golfers if this is a sample of 80 golfers instead of a sample of 50.(C) Which confidence interval is smaller and why?
Office Visits what is the age distribution of patients who make office visits to a doctor or nurse?
A random sample of 20 single men was asked if they would welcome a woman taking the initiative in asking for a date. What is the probability that:
Clark Heter is an industrial engineer at Lyons Products. He would like to conclude whether there are more units produced on the afternoon shift than on the day shift. A sample of 54 day-shift workers showed that the mean number of units produced w..
If the sample mean is 15.2 oz. and the sample standard deviation is 0.40 oz., find the 95% confidence interval of the true mean.
You are a research analyst with a large research and development firm, Akron Research. Your firm performs studies and analysis for companies that need product, process improvement, manufacturing, and consulting research services.
Prepare an analysis of your survey. Determine if you have used the appropriate measures to research your business problem, and identify the level of measurement being used for each of your survey questions.
If there are 5 choices for a question and there is a 50% chance that the student knows the answer, what is the probability that the student knew the answer to a question he correctly answered?
The topic I am treating now is based on using qualitative analysis based on grounded theory to investigate the topic "Mature student studying at University".
Is there meaningful relationship between grades and SAT scores? If student scores 450 on the SAT, what do youbelieve his or her GPA will be?
Let the random variable X denote the number of emergency calls received by the campus police office each day. The probability mass function of X is given by:
The Martin Company is in the process of planning for new production facilities and developing a more efficient distribution system design. At present, it has one plant at St.Louis with a capacity of 30000 units.
A quality-control manager randomly selects 70 bottles of ketchup that were filled on S1 to assess the calibration of the filing machine. Determine the population study?
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