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If a random sample of 10 people found that 9 were pro-life (i.e., 90%), while another random sample of 1000 people from the same population found that 550 were pro-life (i.e., 55%), which would you find more significant? Why?
Offer any personal experiences where you might have trusted results from a small sample more than that of a large sample, and explain why that was the case.
Comparisons were made for specific causes of death between mortality rates in workers and U.S white male mortality rates from 1950-1978.
Calculate a 92% confidence interval for the mean density of quartz porphyry, given that 75 samples yield mean of 2.62 grams per cubic centimeter
Can and how would you apply basic probability concepts to facilitate business decision making? Critically discuss the difference between discrete and continuous probability distributions?
Suppose you were preparing two-way tables of percentages for the following pairs of variables. How would you run the percentages?
Here are fifty observations on the weight of tea bags. Create mean, mode and median.
Is it true that one of the important properties of time series models is that some sort of pattern in the data over time should be detected first and then used within the model?
The Pearson Product-Moment Correlation Coefficient (r) is a measure of linear relationship between two variables.
The majority of the data is basically distributed if there are enough subjects. For instance, if you collected test scores of only a few honor students, the data will most likely not be normally distributed because you would have a sample that did..
A sociologist wants to describe if the life expectancy of people in Africa is lesser than the life expectancy of people in Asia.
Suppose a company owns three cars that get 20 miles per gallon, two cars that get 22 miles per gallon and one car that gets 24 miles per gallon. Would the mean miles per gallon be 22?
Do these scores suggest that the different foods are differentially preferred by people in general? (Use the .05 significance level.)
The average American male wears a size 10 shoe and spends 4 hours a year tying a tie. The average American female college student owns 3.5 pairs of jeans.
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