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An ambulance service located at the edge of town is responsible for serving a large office building in the downtown area. Testing different routes for getting from the ambulance station to the office building, a driver finds that five trips using route A take an average of 5.9 minutes, with a standard deviation of 1.4 minutes; six trips using route B take an average of 4.2 minutes, with a standard deviation of 1.8 minutes. Assuming normal populations with equal standard deviations, and using the 0.10 level, is there a significant difference between the two routes? Construct and interpret the 90% confidence interval for the difference between the population means.
Construct the indicated confidence interval for the difference between population proportions p1-p2. assume that the samples are independent and have been randomly selected
each individual letter of the word tennessee is placed on a piece of paper and all 9 pieces of paper are placed in a
to obtain information on the corrosion-resistance properties of a certain type of steel conduit 45 specimens are buried
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in the fictional dice game piracy a player begins a turn by rolling a handful of 13 fair independent six-sided
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oh has 15 residents 10 are democrats. in a sample of 4 different voters what is the probability that exactly 3 are
Let p represent the population proportion of all numbers in the corporate file that have a first nonzero digit of 1. Test the claim that p is less than 0.301 by using What is the P-value of the test statistic?
Given that Vacationer will travel less than 500 miles, Find out the probability that he/she will drive or take the Bus/Train?
A survey for Hotels asked respondents "When traveling internationally, do you generally venture out on your own to experience culture, or stick with your tour group and itineraries?" The survey found that 23% of the respondents stick with their t..
the effect of twitter on college
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