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1. In the 2004 presidential election, early exit polls conducted at "key precincts" indicated a strong lead for John Kerry. President George Bush ended up victorious. One problem with exit polls may be thatA. the wrong "key precincts" were chosen.B. the wording of the poll questions was biased.C. the poll is really a voluntary response poll.
2. A survey interviews 1000 Americans by telephone and asks "What do you think is the biggest problem facing education today?" The population of interest for this poll is most likelyA. American students.B. American adults.C. American teachers.
A professor wants to determine if his class' anxiety decreases over the course of the semester. He uses a test to measure a random sample of all students enrolled at midterm and again at the end of the course.
Specification limits for a particular characteristic of a product indicate the values at which the product will operate properly. Assume we have a product with an upper specification limit of 7.25 and a lower specification limit of 4.0. As long as..
Product while 43 out of 80 females preferred it. Compute the test statistic and use technology to find the corresponding p-value based on this test.
Studies have shown that humans complete a 1 mile run in an average of 12.2 minutes. There is a separate group of 30 who complete a 1 mile run with an average of 8.67 minutes with a standard deviation of 0.33 minutes.
Generate survival times X from an exponential distribution with rate lambda=1 with a censoring distribution C being exponential with rate theta = 2/3. Then Plot Kaplan-Meier Survival curve estimates along with true survival curve for n=25,100,1000..
Using a three month moving average, what would the forecast and MAD have been for July? Which forecasting method would you recommend? Why?
Particular brand that they buy. A retailer has ordered a consignment of 5000 such lamps for its chain store nationwide. What is the probability that, the number of defective lamps will be 500 or less?
Suppose that the cars have been categorized according to whether the car needs warranty-related repair (yes or no) and the country in which the company manufacturing the car is based
The researcher estimated that out of the 100 students at least 50% of the students would be exposed to movies and TV w/ crude humor at least 2-4 times per week.
What is his expected cash balance at the end of the following May and what is the probability that his balance will be negative in one or more month?
Evaluate the value of the F statistic for Devices- I plan an experiment to test the latest conflicting diet programs. The factor for Diet will involve three different levels: low fat, low carbohydrate, and low calorie. The other factor will involve..
The distribution of the serve speeds was mound-shaped and symmetric. What proportion of the player's serves was between 89 mph and 128 mph?
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