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A student commented, "Once a poll has been taken, P^ (the sample proportion with a certain opinion) is a known value, so it cannot have a distribution of possible values.
Therefore, I don't understand what you mean by the sampling distribution of P^." Write an explanation for this student.
1.researchers are studying the absorption of two drugs into the bloodstream. each drug is to be injected at three
a sample of 250 observations is selected from a normal population for which the population standard deviation is known
what is the probablitiy of getting a exactly one head b exactly one tail and c not b in 4 coin
Now, assume that P moves from the left to the right on a hyperbola given by the equation y = 1/x at a uniform speed of 5 m/s. What is the velocity vector of P at the point (3,1/3)?
Once R is selected, the sum is compounded instantaneously for a year so that X= 50000 e^R dollars is the amount at the end of that year. Find the distribution function and the p.d.f. of X.
The results are x‾ = $259.60 and s = $52.00. Give a 95% confidence interval for the average amount of bonus dollars that will be spent by a cardholder during the year.
a mineral economist estimated that a particular mining venture had probability 0.4 of a 30 million loss probability 0.5
400 people are chosen from a large population that is 50% women. How likely is it that the sample has only 180 women or fewer? What is the value of the test statistic z?
a game at the state fair has a circular target with a radius of 10.7 cm on a square board measuring 30 cm on a side.
What is the z score for a GRE score of 597? What is the percentile rank of this z score and What is the height (in inches) that marks the 75th percentile for this group of officers?
a simple random sample of 49 8th graders at a large suburban middle school indicated that 82 of them are involved with
As a part of a class project, your statistics instructor asks you to weigh a sample of 100 items from a shipment of 500. You are testing the null hypothesis that the mean is greater or equal to 10 lbs.
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