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Someone is interested in studying property tax rates in the United States. He randomly selects 25 homes and looks up their property tax rate. He is interested in studying the center, shape and spread of the data. What type of graph does he make?
A. histogram
B. bar graphs
C. scatterplots
D. pie charts
suppose thw weekly amount spent on repairs at a certain computer is normally distributed with a mean of 300 and a
Organize data into a frequency distribution. How many classes would you propose? What value would you propose for class interval?
A study to see how well marital dissolution was predicted by the personality scores of husbands and wives was published in the Journal of Personality and Social Psychology.
From past information, it is known that the standard deviation of the population is 22 mph. The 96.6% confidence interval for m is?
A description of how you believe statistics can enrich and represent the results of a study, and an explanation of how statistics can be used to misrepresent the results of a study.
Use the analysis of variance (α = 0.05) to find out whether this data is sufficient to conclude that there are significant differences between feedback conditions.
Do the association between the sizes of the heads and bodies of the two species appear to be strong? Explain.
post your response to the following questions and participate in the discussion with your fellow students during the
What signified to you on all of the problems that required a binomial distribution that you were to use a binomial distribution? Which problems required a binomial distribution?
A process has a capability index of 0.40. This index is interpreted to mean that the process is:
Suppose a statistician chose to test a hypothesis at sigma = 0.01. The critical value for a right-tailed test is +2.33. If the test value were 1.97, what would the decision be?
the theorem that states that the sampling distribution of the sample mean is approximetly normal when the sample size n
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