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Question: Wine Spectator rates wines on a point scale of 0 to 100. It can be inferred from the many ratings in this magazine that the average rating is 87 and the standard deviation is 3 points. Wine ratings seem to follow a normal distribution. In the May 15, 2007, issue of the magazine, the burgudy Domaine des Perdrix received a rating of 89.2. What is the probability that a randomly chosen wine will score this high or higher?
suppose x has density function fx for aleqxleqb and ycxd where cgt0. find the density function of
A doctorhas developed an experimental drug for toe-nail fungus. He needs to test it out on some people to make sure it works. He has a list of 2000 people who could be potential subjects in his study. 1120 of these potential subjects have toe ..
in a sample of 30 elves the correlation between years of employment and cookie productivity was found to be -0.25.a
At the 0.01 level of significance, test the claim that the mean is less than 342 km. Should the storage yard be moved? Give your reasons.
What is the probability of winning the lottery with only one ticket?- what is the most probable number of winning tickets?
An aptitude test has a mean score of 80 and a standard deviation of 5. The population of scores is normally distributed What raw score corresponds
The score is approximately normally distributed with a mean of 270, and population standard deviation of 9, how to find the score at the 25th, 75th percentile? and how to find the interquartile range of the score?
Sketch a standard Normal curve and mark this value of z on it. Find the P-value and shade the appropriate areas under the curve to illustrate your calculations.
in the last decade society in general and the judicial system in particular have altered their opinions on the
Discuss the role of sensitivity analysis in LP. Under what circumstances is it needed, and under what conditions do you think it is necessary?
For a sample of 138 independent observations from a normal distribution of unknown μ and variance σ 2 = 2.6, the sample mean is 52.3. What is the width of the 95% confidence interval for μ?
Determine the number of corporations that recovered their investment in analytics in six months or less.
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