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copy machine repair company claims that its average repair cost is less than $100. To check this claim, a simple random sample of 30 repairs made by this company is taken. The sample average is $97, and the SD is $17. Assume that the repair cost has a normal curve.
What is the probability that a worker at Random drives more that 15 miles to work if the distribution of all worker's mileage is a Normal Distribution that ranges from 4 miles to 26 miles?
The speeds of all vehicles have a bell-shaped distribution with a mean of 72 mph and a standard deviation of 3 mph. Using the empirical rule, find the percentage of vehicles with the following speeds on this section of I-95.
Suppose {a_n} (n=1 to N) and {b_n} (n=1 to N) are two finite sequences of complex numbers. Let B_k = sum b_n (sum n=1 to k) denote the partial sum of the series sum (b_n) with the convention B_0=0.
Describe a real-life situation where Pascal's Triangle can be used to calculate probability. Is this the best method for solving your calculation?
Is the number of children that a college student currently has independent of the type of college or university being attended?
Sugar packaged by a certain machine has a mean weight of 5lb and a standard deviation of 0.02 lb. For what values of c can the manufacturer of the machinery claim that the sugar packaged by this machine has a weight between 5 - c and 5 + c lb with..
Find out the mean for your 3 numbers. They signify your neighborhood's news-viewing habits. Mean is number of news programs viewed in neighborhood each week.
The width of a confidence interval is equal to twice the value of the margin of error. Explain your answer. What is the first step in hypothesis testing?
Choose one of these tests and describe in your own words, the purpose of the test, any particular assumptions or limitations pertaining to the test, and provide an example where you could employ the test.
The analysis needs to be re-run adding the error into the regression sum of squares.
If W denotes the total number of spaces one moves under these special conditions, find the mean and standard deviation of W.
A simple random sample of 50 speeds (in mph) is obtained from cars traveling on a section of I-10 through Tallahassee. The sample has a mean of 72.3 mph and a standard deviation of 7.4 mph. Use a 0.05 significance level to test the claim that the ..
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