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Prepare a critical analysis of a quantitative study focusing on protection of human participants, data collection, data management and analysis, problem statement, and interpretation of findings.
Data analysis must be completed using a statistical software package - either Statistix for Windows, with the MegaStat add in, SPSS, SAS, R or any other legitimate software package.
In each of the following scenarios, which would be larger, the mean or median, or would the mean and median be about the same? Provide reasoning--think about the shape of the histogram for the data and how the shape would affect the relationship b..
A sample of 100 orders revealed that 82 were delivered within the promised time. At the 0.10 significance level, can we conclude that less than 90% of the orders are delivered in less than 10 minutes?
assume that a sample is used to estimate a population proportion p. find the margin of error e that corresponds to the
Write a brief introductory paragraph regarding the background of data and write paragraph (or two) that specifies the shape of the distribution of the data and reference your graph(s) used to make your decision.
A sample of 20 pages was taken without replacement from the 1,591-page phone directory Ameritech Pages Plus Yellow Pages. On each page
The lifetime of automobile tires of a certain brand are found to follow an exponential distribution with mean 30 (in thousands of miles). Find the probability that one of these tires will last
Suppose the age of buyers were collected and the data follows the bell curve (a normal distribution). The buyers had an average age of 47 years and a standard deviation of 5.
In a simple random sample of 40 connectors from a very large production run, the mean time until failure was found to be 35.5 seconds. Construct and interpret the 99% confi- dence interval for µ 5 the mean time until failure for all of the conne..
a researcher would like to evaluate the claim that large doses of vitamin c can help prevent the common cold. one group
for a normal distribution with ? lt 98.6 given a sample of 25 values with a sample mean of 98.2 and a sample standard
the project requires you to use the statistical techniques learned in this class. you may make up data as you like
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