If P(A ) = 0.35 and P(B ) = 0.65, then A and B must be mutually ...

[chandani]

If P(A ) = 0.35 and P(B ) = 0.65, then A and B must be mutually exclusive.
 
  Indicate whether the statement is true or false

Question 2

Approximately what proportion of the observations is less than 548?
 
  What will be an ideal response?

[Bison]

Answer to Question 1

FALSE

Answer to Question 2

The value 548 is two standard deviations above the mean; hence the Empirical Rule implies that the area between the mean and 548 is approximately 0.95 / 2 = 0.475. Therefore the proportion of the observations less than 548 is approximately 0.975.

[chandani]

Thanks for the timely response, appreciate it

[vickybb89]

Excellent