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There are 1733 machinery rebuilding and repairing companies in the United States. A tool manufacturer wishes to survey a simple random sample of these firms to find out what proportion of them are interested in a new tool design.
If the tool manufacturer would like to be 95% confident that the sample proportion is within 0.01 of the actual population proportion, how many machinery rebuilding and repairing companies should be included in the sample?
Average salary of $27,839 with a standard deviation of $7,400. At the 0.01 significance level, do teachers with Master Degrees have higher salaries?
Levels above 200 warrant attention. If 95 teenage boys are examined. How many would you expect to have cholesterol levels greater than 225.
a golf ball is selected at random from a golf bag. if the golf bag contains 1 green balls6 brown balls and 8 orange
What statistical tests can perform to compare two groups asked the same question, when the question has a yes/no answer and the sample groups are different.
Does the data suggest that true average maximum lean angle for older females is more than 10 degrees smaller than it is for younger females? State and test the relevant hypotheses at significance level .10 by obtaining a P-value.
Graph the p.d.f and show that the probability of the part failing in the first 200 weeks is 1/8
That the requirement is NULL AND VOID. To be PROVED UNWORKABLE and sink like the Titanic? It is WORTH a little delay to have such a desirable result, isn"t it?
Impact of Uncertainty on an MNC's Valuation Assume that Alpine Co. is a U.S. firm that has direct foreign investment in Brazil as a result establishing a subsidiary there.
Find the mean and the median of the number of items. Find the range and the standard deviation of the number of items.
john carpenter runs a timber company. john is considering an expansion to his product line by manufacturing a new
suppose a mutual fund qualifies as having moderate risk if the standard deviation of its monthly rate of return is less
The probability distribution of trading volume is approximately normal. Compute the mean and standard deviation to use as estimates of the population mean and standard deviation. What is the probability that, on a randomly selected day, the early mo..
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