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Suppose that you are a regional director of an IRS office and that you are charged with sampling 1% of the returns with gross income levels above $15,000. How might you go about this? Would you use random sampling? How?
fuel economy estimates for automobiles built one year predicted a mean of 25.8 mpg and a standard deviation of 7.2 mpg
a die has half of the faces red and the other half black. the die is rolled 3 times. let the random variable x
Shaver Manufacturing, Inc., offers dental insurance to its employees. A recent study by the human resource director shows the annual cost per employee per year followed the normal probability distribution, with a mean of $1,280 and a standard deviati..
What are the assumptions for multiple regression? How do the values of the individual correlation coefficients compare to the value of the multiple correlation coefficient?
suppose you are told that a 95 confidence interval for the average price of a gallon of regular gasoline in your state
poor milhouse is hopelessly in love with lisa. unfortunately for milhouse lisa does not feel the same way. however
Determine the pairs which are significant according to LSD and what pairs are important according to Bonferroni?
Under the assumption that co payment amounts are normally distributed, find a 99% confidence interval for the mean amount in dollars.
a student believes that no more than 25 i.e. 25 of the students who finish a statistics course get an a. a random
a) Test whether there is a difference between attitudes in the 2 cities. Use a 95% alpha. b) What does your result say about attitude consistency across cities?
In the regards to a stem-and-leaf plot that best represents the given data, what would the stem be? Determine which stem would have the most leaves and explain what this means in terms of the GPA's.
Two sets, and 18% have three or more sets. If two households are chosen at random, what is the probability that at least one has a television set?
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