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Question: Suppose that 53% of all registered voters prefer Barack Obama to John McCain. (You can substitute the names of the current presidential candidates if you like.)
a. In a random sample of 100 voters, what is the probability that the sample will indicate that Obama will win the election (that is, there will be more votes in the sample for Obama)?
b. In a random sample of 100 voters, what is the probability that the sample will indicate that McCain will win the election?
c. In a random sample of 100 voters, what is the probability that the sample will indicate a dead heat (fifty-fifty)?
d. In a random sample of 100 voters, what is the probability that between 40 and 60 (inclusive) voters will prefer Obama?
in a murder trial in los angeles a shoe expert stated that the range of heights of men with a size 12 shoe is 70 inches
Clark Heter is an industrial engineer at Lyons Products. He would like to determine whether there are more units produced on the afternoon shift than on the day shift.
Probability of default for each contract a-f in any given year = 2.50%. Once there is a default, the cash flows cease and there is no ability to recover future cash flows. Defaults are not correlated.
Refer to the previous two exercises. PROC GENMOD in SAS reports the maximized log likelihood as 3475.19 for the model of mutual independence (df = 11), 3538.05 for the model of homogeneous association (df = 5), and 3539.58 for the model containing..
if 30of the students have never taken a statistics class 60 have taken only one semester of a statistic class and the
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Normally distributed with a mean of 9.75g and a standard deviation of 0.08g. Find the weights that separate the top 5% and the bottom 5%.
for the table that follows answer the following questionsx y1 -62 -103 -144- would the correlation between x and y in
Nestling mass and nest humidity. Researchers investigated the relationship between nestling mass, measured in grams, and nest humidity index, measured as the ratio of total mass of water in the nest divided by nest dry mass, for two different grou..
A clinical trial is run to investigate the effectiveness of an experimental drug in reducing preterm delivery to a drug considered standard care and to placebo.
The following statements are all incorrect. Explain the statements and the errors fully using the probability rules discussed in topic two. I have flipped and unbiased coin three times and got heads, it is more likely to get tails the next time I f..
in some reports the mean and coefficient of variation are given. for instance in statistical abstract of the united
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