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Question: Mutual funds. In March 2002, Consumer Reports listed the rate of return for several large-cap mutual funds over the previous 3-year and 5-year periods. ("Large cap" refers to companies worth over $10 billion.)
a) Create a 95% confidence interval for the difference in rate of return for the 3- and 5-year periods covered by these data. Clearly explain what your interval means.
b) It's common for advertisements to carry the disclaimer "Past returns may not be indicative of future performance," but do these data indicate that there was an association between 3-year and 5-year rates of return?
Complete the table and answer the following questions. Use the .05 significance level. How many treatments are there? What is the total sample size?
Using at least one example from the reading, explain how this gender expectation impacted American culture during the Jeffersonian period.
a manufacturer receives parts from two suppliers. a simple random sample of 400 parts from supplier 1 finds 20
grandma gertrudes chocolates a family owned business has an opportunity to supply its product for distribution through
Test the null hypothesis that a population mean is 50 against the alternate hypothesis that the mean is not 50. What "model" should be used and why?
which is not a possible reason to choose the z distribution for a hypothesis test of a mean?a. the value of s is
Explain a few of the following on whatever topic you choose: decision tree, decision stragety, probability, forecasting, linear programming as it relates to work, life or interset.
Determine the sample size necessary to estimate a population mean to within 1 with a 90% confidence given that the population standard deviation is 10.
The 2009 National Assessment of Educational Progress (NAEP) gave a mathematics test to a random sample of eighth-graders in Texas. The mean score was 287 out of 500. To give a confidence interval for the mean score of all Texas eighth-graders, you..
Group suspects that local shopkeeper's 10g packs is actually less than wt. The group took sample of 40 whose mean wt is 9.95 and s.d. of 0.15. Find p-value for the test of hypothesis.
The manager wants to adjust the mean to reduce the reject rate. Compute the probability of underfilling for several values of the mean fill.
consider the following shortest-route problem involving six cities with the distances given.path distance1 to 2 31 to 3
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