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Sometimes data does have a huge difference and mean is still the best way to find the central point. For example. Perhaps you have a millionaire, someone making $30,000 and a lot of people spread out all over (and evenly) in between. How would this need to change for median to be a better measure?
At the 0,05 level, can we conclude that women think men are less kind, gentle, and thoughtful in the later survey compared with the earlier one?
Sampling variability refers to the idea that different samples will include different individuals
Estimate the mean number of cars per household for the population of households in the neighborhood. Give the 95% confidence interval.
The sample mean price is computed from the prices at these gas stations. What is the probability that the sample mean price falls within a nickel of the State's overall mean price? i.e between 3.09 and 3.19.
A five-year old study claims that selling prices of new homes / condominiums in the New York area have a normal distribution with mean = $180,000 and standard deviation = $40,000.
In its third year, a football team averaged 16,050 fans per game, with a standard deviation of 2,500 fans. What is the probability that the number of fans at any given game was greater than 20,000?
Hypothesis test for two factors ANOVA. Describe what thses represent and, based on figure, whether there is a problem with the data r otherwise.
Find the expected frequency to test the claim that walking and low, moderate, and high blood pressure are not related. Round to the nearest tenth if necessary.
A researcher predicts that the percentage of people who do no watch TV is higher now than before the advent of the Internet. Let the p1 denote the population proportion of American adults in 1975 who reported watching no TV. Let p2 denote the corresp..
ExxonMobil's required return for equity, re is 14%. Its required return for debt, rd is 8%, its debt-to-total-value ratio L, is 35%, and its marginal tax rate, T is 40%, calculate its (adjusted WACC)?
Two rainstorms occurred in one week in a certain area. The first storm lasted 20 hours, and the second storm lasted 40 hours, for a total 1400 mL of rain.
Results are comparable to what could be expected in human serum. Are true binding percentages for five antibiotics tested all equal? Let α = 0.05.
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