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A political polling firm is conducting a poll in order to determine which candidate is likely to win an upcoming election. The polling firm interviews likely voters and asks each whether or not they will vote for the republican (R) or the democrat (D) candidate. They then tabulate the percentage that respond R and D
(a) How many voters should the firm poll in order to correctly estimate the correct proportion of R and D respondents in the general population to within percentage points with 90% probability?
(b) Repeat part (a) if we want 95% confidence in our polling data.
If you assume returns follow a normal distribution, which investment would give a better chance of getting at least a $40 million return? Explain how your answer could change if you knew returns followed a skewed distribution instead of a normal d..
64% of men consider themselves professional baseball fans. You randomly select 10 men and ask each if he considers himself a professional baseball fan.
If the owner wants to lease some new equipment for the oil change outlet so that the average customer spends 15 minutes in the system what level or speed of service rate must the oil change crew deliver?
economics is about allocation of limited resources to their best use. similar to the rest of economy healthcare sector
If 3 different factor levels show a lot of variation between levels this implies:
a drivers reaction time in response to another car changing lanes is normally distributed with a mean of 0.4 seconds
In brief describe three situations in which the 'First In First Out' discipline rule is not applicable in queuing analysis. Provide examples of four situations in which there are limited, or finite population.
A human society claims that less than 31% of U.S. households own a dog. In a random sample of 392 U.S. households, 155 say they own a dog. At a=0.03, is there enough evidence to support the society's claim?
suppose that you are conducting a study on the effectiveness of a new teaching method and that you wish to use a
according to a recent report by the government new home construction fell to an 18-month low in october 2010
1.a pediatrician is interested in studying the effect of motrin on reducing temperature in young children. four
If true explain and if false give an example. a. The significance level of a statistical test is equal to the probability that the null hypothesis is true. b. If the significance level of a test is decreased, the power of the test would be expected t..
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