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A coin is biased so that heads is twice as likely as tails. For three independent tosses of the coin, find(a) the probability distribution of X, the total number of heads;(b) the probability of getting at most two heads.
Assume that a 2005 poll of 1000 American voters found that 76% of Republicans favored ending the tax on dividend income, as did 42% of Democrats and 54% of Independents.
Median can be a more suitable measure of central tendency than mean if distribution of data is extremely skewed.
in a community with a population of 10000 people the prevalence of a certain disease is 5. a screening test for this
The effect of a lurking variable can be surprising when individuals are divided into groups. In recent years, the mean SAT score of all high school seniors has increased. But the mean SAT score has decreased for students at each level of high scho..
1. using the percent passing developmental courses in shown in the table for your campus in fall 2009 what is the
a) Set up the null and alternative hypotheses, and perform the hypothesis test. b) Does the jury selection system appear to be fair?
what is the probability that she would get at least 20,000 additional miles out of it? Repeat under the assumption that the lifetime mileage of the car is not exponentially distributed but rather is (in thousands of miles) uniformly distributed ov..
Use frequency distribution to create a probability distribution, determine the (b) mean,(c) variance and (d) standard deviation of probability distribution and (e) interpret results in context of real life situation.
Markland Manufacturing intends to increase capacity by overcoming a bottleneck operation by adding new equipment. Two vendors have presented proposals.
Each entry in a table of random digits like Table B has probability 0.1 of being a 0, and digits are independent of each other. What is the probability that a group of ?ve digits from the table will contain at least one 5?
Time/CNN voter polls monitored public opinion for the presidential candidates during the 2000 presidential election campaign. One Time/CNN poll conducted by Yankelovich Partners, Inc., used a sample of 589 likely voters (Time, June 26, 2000). Assume ..
Company reveal that 70% of the workers are married, 36% are college graduates, and half of the college graduates are married. What is the probability that a randomly chosen worker is?
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