What is the standard deviation of the following distribution: Probability           Possible Outcome     .20                          19%     .65                         13%     .15                          -8%

Read the t statistic from the table of t distributions and circle the correct answer. A two-tailed test, a sample of 40 at a .01 level of significance; t = choice a,b,c,d as followed     2.708     1.328     1.96     2.567

Using the following returns, calculate the arithmetic average returns, the variances, and the standard deviations for X and Y.    Year Returns X Y 1 9% 23% 2 27 44 3 16 -6 4 -17 -20 5 18 52     Calculate the arithmetic average return for X. Calculate the arithmetic average return for Y.

Probability Returns 0.15 0.20 2.0.35 0.20 0.10 8.65 Based on the above information, what is the risk (standard deviations) ? 2.94 3,92 10% 8,68 12% 15% 17% 20%

How large a sample should be selected to provide a 95% confidence interval with a margin of error of 6? Assume that the population standard deviation is 20. Round your answer to next whole number.

If beta of Stock A with market is 0.72 and and the market variance is 225 , the covariance between A and B is 202.5, beta of stock B with market is a. 1.10 b. 0.81 c. 1.20 d. 1.25

Find the mean, variance, and standard deviation of the binomial distribution with the given values of n and p. n= 124, p = 0.56

4. Using the following returns, calculate the arithmetic average returns, the variances, and the standard deviations for X and Y. Year 1 2 3 4 5 X 12% 28% 9% -7% 10% Return Y 25% 34% 13% -27% 14%