Examlex
TABLE 6-6
According to Investment Digest, the arithmetic mean of the annual return for common stocks from 1926-2010 was 9.5% but the value of the variance was not mentioned. Also 25% of the annual returns were below 8% while 65% of the annual returns were between 8% and 11.5%. The article claimed that the distribution of annual return for common stocks was bell-shaped and approximately symmetric. Assume that this distribution is normal with the mean given above. Answer the following questions without the help of a calculator, statistical software or statistical table.
-Referring to Table 6-6, find the probability that the annual return of a random year will be less than 7.5%.
Q4: The probability that a particular brand of
Q11: Referring to Table 5-8, what is the
Q17: The interval between patients arriving at an
Q25: Referring to Table 7-4, the probability is
Q29: Referring to Table 8-5, 95% of all
Q33: Referring to Table 8-9, the superintendent can
Q59: In a game called Taxation and Evasion,
Q75: Referring to Table 4-5, if a package
Q173: Referring to Table 7-7, the population mean
Q190: Given that X is a normally distributed