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Assume that rate of return for the S&P 500 is normally distributed with unknown mean and unknown variance . A sample of 25 randomly picked stocks from the S&P 500 generated a mean rate of return of 5% with a sample variance of 50%2 for the year 2005. a) What is the p-value for the test of the null hypothesis: μ=2% against the alternative that μ is not equal to 2%? Briefly explain why the chosen test statistic is appropriate for answering this question. Statistics homework help
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Consider a normal distribution with mean 33 and standard deviation 9. What is the probability a value selected at random from this distribution is greater than 33? (Round your answer to two decimal places.) Statistics homework help
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