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A local health center noted that in a sample of 400 patients 80 were referred to them by the local hospital. a) Provide a 95% confidence level for all the patients who are referred to the health center by the hospital. b) What size sample would be required to estimate the proportion of hospital referrals with a margin of error of 0.04 or less at 95% confidence?
Find out the test statistic s and its two-sided P -value. Do data give good evidence that population mean is not zero?
If a single card is drawn from an ordinary deck of cards, what is the probability of drawing either a heart or a 6? (Answer in a fraction).
If a randomly selected student is a female student, what is the probability she is a C student?
Reject H0 at β β = .01; there is evidence of a difference between the mean voter turnouts for urban, suburban, and rural precincts.
Using the data in the Excel file Home Market Value, develop a multiple linear regression model for estimating the market value as a function of both the age and size of the house.
What does the standard deviation mean? Interpret the standard deviation relative to the average or mean?
Then explain your answer to someone who has never had course in statistics (but who is familiar with mean, standard deviation, and Z scores.)
Explain how you can determine n3 from knowing n1 and n2. Thus, the multinomial distribution of (n1, n2, n3) is actually two-dimensional.
For monthly volume of 300 tables, find out total cost, total revenue and profit.
For sample of size 100, what is the mean and standard deviation of the sample mean.
Either no change to the Objective function or a raise in the value of the objective function depends on the constraint.
Estimated the probability that among 75 randomly selected students, at least 20 of them score greater than 78.
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