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The following table gives in-state tuition costs (in dollars) for 15 randomly selected colleges taken from a list of the 100 best values in public colleges (source: Kiplinger's Magazine, October 2000).
3788 4065 2196 7360 5212 4137 4060 3956 3975 73954058 3683 3999 3156 4354
(a) Test for outliers.
(b) Test whether the data are normal.
They find that these 100 people lost an average of 38 hours with a standard deviation of 9.5 hours. What is the P-value for this significance test?
a large university is interested in learning about the average time it takes students to drive to campus. the
the total number of cars and light-duty trucks sold in 2013 was 2.234 million while 1.346 million were sold in 2009.
A machine for making nuts is known to create nuts with a standard deviation in size of 0.20mm. A tradesman is required to adjust the machine to make 49mm nuts.
A building contractor claims he can renovate a 300 square foot kitchen and dining room in 40 work hours plus or minus 5 hours (i.e. The mean and standard deviation respectively)
Is the Euro fair? Soon after the Euro was introduced as currency in Europe, it was widely reported that someone had spun a Euro coin 250 times and gotten heads 140 times. We wish to test a hypothesis about the fairness of spinning the coin.
starting salaries of 64 college graduates who have taken a statistics course have a mean of 43500 with a standard
A pair of dice is rolled. The sum of the faces on top is observed. What are the expectation, variance, and standard deviation of the observed sum? The Expectation and Variance Template attached to the main posting is optional and recommended.
Is there evidence to suggest a difference in the mean waiting times at the four body shops? Use the .05 significance level.
If you were with the franchisee, would you want the level of significance to be higher or lower? why? if you used the franchisee's level of significance, would your power be higher or lower than before or would it not change?
there are 10 tickets in the box 3 of them are winning. find the probability that the first taken ticket is winning
inclusions are defects in poured metal caused by contaminants. the number of large inclusions in cast iron follows a
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