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Fidelity Magellan is a large cap growth mutual fund and Fidelity Small Cap Stock is a small cap growth mutual fund (Morningstar Funds 500, 2006). The standard deviation for both funds was computed based on a sample size of 26. For Fidelity Magellan, the sample standard deviation is 8.89%; for Fidelity Small Cap Stock, the sample standard deviation is 13.03%. Financial analysts often use the standard deviation as a measure of risk. Conduct a hypothesis test to determine whether the small cap growth fund is riskier than the large cap growth fund. Use an alpha of 0.05 as the level of significance.
Create the 90% confidence interval for mean score of all such subjects. You may suppose scores are usually distributed.
How many subjects must be tested to determine the effectiveness of the product?
Compute the Kappa statistic and its standard error reading reproducibility of the diagnosis of dyspnea in this clinic.
If a randomly selected student is a female student, what is the probability she is a C student?
Find the sample size required. A pilot study showed that the population standard deviation is estimated to be 0.09 g
A company ships computer components in boxes that contain 20 iteams. Assume the probability of a defective component is .4. use the geometric distribution to find the probability that the first defect is found in the third or fourth component test..
You might find the probabilities using the Table or software of your choice. Please explain how you obtained your results.
If the mailing list can be considered a random sample of the population, what is the chance that at least 1245 Macintosh users will receive the flyer?
Explain a Type I error for this situation. Explain a Type II error for this situation.
Suppose Abraham Lincoln had answered a survey questionnaire in which he indicated that he had not received a grade school diploma. The researcher found that Lincoln's educational score did not correlate with the expected variables. What was wrong?
Estimate the area under the Normal Distribution from the mean to a z-score of -2.07. Estimate the z-score that corresponds to an area of 0.5557 under the Normal Distribution.
Determine the coefficient of determination. Assuming a direct relationship between the variables, what is the coefficient of correlation?
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