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A researcher wishes to estimate, with 95% confidence, the population proportion of adults who say chocolate is their favorite ice cream flavor. Her estimate must be accurate within 3% of the population proportion.
(a) No preliminary estimate is available. Find the minimum sample size needed.
(b) Find the minimum sample size needed, using a prior study that found that 18% of the respondents said their favorite flavor of ice cream is chocolate.
(c) Compare the results from parts (a) and (b).
Before you run your scatter diagram answer the following: What do you think you will find? Bigger fields have more seats? Smaller fields have more seats? No relationship exists between field size and number of seats? A strong relationship exists betw..
Suppose that X represents diameter measurements from a gamma distribution with a mean of 3 mm and a variance of 1.5 mm^2.
Show that when n = 2, the multiplicative utility function is equivalent to the two- attribute multilinear utility function. (Hint: This is an algebra problem. You must show that one utility function is a scaled version of the other.
If the selected coin is flipped twice and comes up heads twice in a row, what is the probability that the coin is two-headed?
Perform a dependent t test to assess your hypotheses above (note that many versions of SPSS use the term "paired samples t test" rather than "dependent t test"; the test itself is the same.
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a professor gives tests that are either hard medium or easy. if she gives a hard test her next test will be either
Research by the Illinois Banking Company revealed that only 10 percent of their customers wait more than five minutes to do their banking. Management considers this reasonable and will not add more tellers unless the proportion becomes larger than..
Is the dependent variable discrete or continuous? interval, or ratio) is used to measure the dependent variable?
q1 a researcher suggests that male nurses earn more money than female nurses. a survey of 16 male and 20 female
What is the formula for measuring earthquakes? Why is a 7.0 earthquake ten times stronger than a 6.0 earthquake?
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