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After an outbreak of diarrhea following a reception at an orchestra concert, you are charged with investigating the cause. What statistical test should be used to test the null hypothesis that the proportion of people becoming ill among those who ate at the reception to the proportion becoming ill among those who did not eat at the reception?
Make a scatter plot. Do you expect a positive, negative, or zero correlation? Why? Find the correlation coefficient and the equation of the line of best fit and write them down
A particular employer requires job candidates to score at least 85 on the dexterity test. Approximately what percentage of the test scores.
Suppose the probability you will get an A in this class is .25 and the probability you will get a B is .50. What is the probability your grade will be above a C?
a) In a sample of 300 snowboard how many snowboards would you expect to have lengths between 150.1 and 151.1 b) what is the percentile rank of a snowboard
The structure of a two factor study can be presented as a matrix with levels of one factor determining the rows and the levels of the second factor determining the columns. With this structure in mind, describe the mean differences that are evalua..
Find the mean and standard deviation of a sampling distribution of sample means with sample size n=253.
Here are summary data from a z test regarding scores on the consideration of future consequences scale (Petrocelli, 2003).
Analysis of variance has long been used in providing evidence of the effectiveness of pharmaceutical drugs. Such evidence is required before the Food and Drug.
The powder diet group had a mean weight loss of 42 pounds with a standard deviation of 12pounds.The liquid diet group had a mean weight loss of 45 pounds with a standard deviation of 14 pounds.
the monthly growth of the height of trees in montana has a mean of 47.5 and a standard deviation of 11.6. assume a
Conduct t-test analysis, using guidelines in the instructions provided - Write your results in a report, using the outline provided
Regression is a technique that economists and businesspeople rely on heavily. Think about the relationship between advertising expenditures and sales.
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