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Hypothesis Test (Means for Two Populations)
Collect 20 samples of each population of any variable and determine which one has a lower average with an alpha of 5%. For each minitab result needs to write a paragraph explaining the results and data tendencies that can be inferred in the report.
1) The Economic Policy Institute reports that the average entry-level wage for male college graduates is $22.14 per hour and for female college graduates is $19.07 per hour. The standard deviation for male graduates is $3.77 and for female graduates ..
1. introductionexplain the purpose of the study.ii. summary of data collectionidentify sample population sampling frame
Compare and contrast significance levels and p-values.
The owner of a fish market has an assistant who has determined that the weights of catfish are normally distributed, with mean of 3.2 pounds and standard deviation of 0.8 pound. What percentage of samples of 4 fish will have sample means between 3.0 ..
Perform exploratory data analysis on CreativityPre and CreativityPost. Using SPSS, calculate the mean and standard deviation of these two variables.
An analysis of the final test scores in this class shows that the scores follow the normal distribution. The mean of the distribution is 75, and the standard deviation is 8. The professor wants to award an A to a student whose score is in the highest..
For a normal distribution, the z-score boundary that separates the lowest 2.5% of the scores from the rest is z = -1.96
1. eithernbsp find a newspaper tv radio or web article that reports some scientific study or statistical analysis of
What does a population proportion tell us about the population? Explain the difference between p and pˆ. What is meant when a public opinion poll's margin of error is 3 percent?
What were the differences in the sources of employees for Vivid Sky as it developed? What are the benefits and problems of using equity to compensate employees? What about using pay? How could Tim have managed the third wave of employees if he had hi..
Consider a machine that fills soda bottles.
A study examined waiting times in die X-ray department for a hospital in Jacksonville, Florida. A clerk recorded the number of patients waiting for service at 9:00 A.M. on 20 consecutive days and obtained the following results. a. Define the experime..
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