The distance between the 25th percentile and the median is always ...

[casperchen82]

The distance between the 25th percentile and the median is always the same as the distance between the median and the 75th percentile.
  Indicate whether the statement is true or false

Question 2

The price-earnings ratios of a sample of stocks have a mean value of 13.5 and a standard deviation of 2 . If the ratios have a bell shaped distribution, what can we say about the proportion of ratios that fall between
 a. 11.5 and 15.5?
  b. 9.5 and 17.5?
  c. 7.5 and 19.5?

[prumorgan]

Answer to Question 1

F

Answer to Question 2

a. The interval contains approximately 68 of the ratios, according to the Empirical Rule.
b. The interval contains approximately 95 of the ratios according to the Empirical Rule.
c. The interval contains approximately 99.7 of the ratios according to the Empirical Rule.

[casperchen82]

Thank you

[prumorgan]

No problemo