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Remember that a resistant statistic is a numerical summary whose value is not unduly influenced by an outlier of any magnitude. Is the standard deviation a resistant statistic?
Justify your answer by giving an example of a small dataset, and then adding a very large outlier and noting how the standard deviation is affected.
Is this statistically significant evidence that the true mean diameter is greater than 20 millimeters? Set up the hypothesis, and enter your P-value below, rounded to four decimal places.
Chi-square test for independence of attributes - Describe why a x 2 test of the resulting contingency table is appropriate for such an investigation.
Consider a sample space of three outcomes A,B,and C. Which of the following represent legitimate probability models?
the liquid chlorine added to swimming pools to combat algae has a relatively short shelf life before it loses its
If the researcher deems the data to be statistically significant, which of the following is true with respect to a conclusion reached?
The average for 14 cross-country runners is 172 mg/dl with a standard deviation of 41 mg/dl. Solve using the Traditional Method. Find the p-value for your test statistic. Use an α = 0.05.
Calculate P value? Calculate critical value?
when an opinion poll calls residential telephone numbers at random only 20 of the calls reach a live person. you watch
what is a 99 confidence interval on our estimate of mean if our sample of 40 observations with a sample standard
Think about a real world situation or problem that could be addressed using a single-sample t test. For this situation or problem, clearly identify the independent and dependent variables you would study
suppose that for a certain individual calorie intake at breakfast is random variable with mean 500 and standard
listed below are measured amounts of lead in micrograms per cubic meter or ugm3 in the air. the epa has established an
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