A set of data has a mean of 80 and a standard deviation of 5. To ...

[Pea0909berry]

A set of data has a mean of 80 and a standard deviation of 5. To determine two values that contain at least 8
  9
  of
  the data, we use:
 
  A) Chebyshevs theorem. B) the coefficient of variation.
  C) z-scores. D) the empirical rule.

Question 2

Fifty percent of the people that use the Internet order something online. Find the probability that only three of 9 Internet users will order something online.
 
  A) 0.164 B) 0.002 C) 0.333 D) 10.500

[heinisk01]

Answer to Question 1

A

Answer to Question 2

A