Author Archives: Anonymous
Using five years of past data, you estimate that a stock’s e…
Using five years of past data, you estimate that a stock’s expected return for the coming year is 14% and its risk (standard deviation) is 9%. Assuming returns are normally distributed, there is approximately a 95% probability that next year’s return will fall within which of the following ranges?
Read DetailsCarson Inc.’s manager believes that economic conditions duri…
Carson Inc.’s manager believes that economic conditions during the next year will be strong, normal, or weak, and she thinks that the firm’s returns will have the probability distribution shown below. What’s the standard deviation of the estimated returns? (Hint: Use the formula for the standard deviation of a population, not a sample.) Do not round your intermediate calculations. Economic Conditions Prob. Return Strong 30% 34.0% Normal 40% 10.0% Weak 30% -16.0%
Read DetailsThe frequency distribution below shows the scores from a rec…
The frequency distribution below shows the scores from a recent test in an introductory statistics course. Scores Frequency 61-65 5 66-70 6 71-75 10 76-80 25 81-85 20 86-90 10 91-95 4 a) How many students scored at least 81? [a] b) What percentage of students scored between 61 and 65? [b] %
Read DetailsThe ages(in years) at first birth of a random sample of 10 w…
The ages(in years) at first birth of a random sample of 10 women in the US are given below. 19 20 21 21 25 28 32 36 41 44 Use the data to compute the following. (for a-e , round answers to one decimal place as needed). a) Mean [Mean] b) Median [Median] c) Q1 [Q1] d) Q3 [Q3] e) IQR [IQR]
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