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A prof. can't decide how to vote on a tuition increase for the students at her univ. The incrase is supposed to pay for new student parking and there appears to be mixed feelings. The prof. decides to do her own survey. If the proportion fo her students supporting the tuition increase exceeds .70, she will vote to support an increase. A random sample fo 400 students are selected and 215 are found to support the tuition increase. Use .01
What sampling method did you use? Construct a 95% confidence interval for the true population proportion of the SUV's. What sample size would be needed to ensure an error of +/- 0.025 with 95% confidence?
The one time fling. Have you ever bought the article of clothing (dress, sports jacket, etc.) worn item once to a party, and then returned purchase?
Why is "rounding-down" the LP solution the suboptimal way to solve Integer programming problems? Can you describe why?
The monthly income of residents of Dayton is normally distributed with a mean of $3000 and a standard deviation of $500.
What the degree of freedom tells us? What are the degree of freedom for t- test, X^2-test, and for F-twst?
Let S = {c, h, j, q, t, y} be a sample space of an experiment and let E = {c, h}, F = {c, q, y}, and G = {h, j, t} be events of this experiment. (Enter your answers using roster notation. Enter Ø for the empty set.)
At Kelsey High School, Mrs. O'brien noted that the students were waiting too long in line for their lunches. After collecting some data, Ms. O'brien determined the mean wait time was 10 minutes.
What is the probability that more than one machine is in the system? Probability that more than two are broken and waiting to be repaired or being serviced? More than three? More than four?
The number of items rejected daily by a manufacturer because of defect for the last 30 days are 22, 21, 8, 17, 25, 20, 18, 19, 14, 13, 11, 6, 21, 23, 4, 19, 11, 12, 16, 16, 10, 28, 24, 6, 21, 20, 25, 5, 17, 9. Complete this frequency table for the..
What is the probability that the next 100 customers will spend an average of less than $56 on dinner?
Blood pressure measurements on adult males 30-39 years of age were obtained in a survey of a representative sample of Twin Cities households. To compare the frequency of hypertension in the white and non-white population surveyed, the most appropr..
A graphical presentation may accomplish ALL BUT which of the following objectives? Illustrate the amount of variation in the data.
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