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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?
Cores on two tests have a bivariate normal distribution; and that correlation of 2 scores is 0.8. Determine the probability that sum of the student's scores on 2 tests will be greater than 200?
Calculate the value of chi-square. What is your decision regarding H 0 ?
If a randomly selected student is a female student, what is the probability she is a C student?
At 5% level of significance, does this sample prove violation of guideline that average patient must pay no more than $250 out-of-pocket? Write your hypotheses and decision rule.
If the same sample results had been obtained from a random sample of 16 students, could the students' claim be accepted at a lower level of significance?
Use the given confidence level and sample data to find a confidence interval for estimating the population mean
A year ago, Air Force implemented new test for finding which candidates are most probable to become successful pilots. Now they wish to see if implementing pilot predictor test was a good idea. Scores have been standardized to facilitate comparis..
Compute the mean, standard deviation, median, and standard error for each group.
Construct a 95% confidence interval estimate for the population proportion of adults who report that e-mails are easy to misinterpret.
Use alpha level. 05 to compute and interpret Pearson's r and to test whether it is important (using all your steps for hypothesis test).
Develop a hypothesis to investigate this problem based on the claim of the heat pump manufacturer
Use the list of random digits below to assign 4 men and 2 women to the shark fin treatment. Read the table from left to right, first selecting the 4 men and then the 2 women. Use the numerical labels given in the chart to the names.
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