If two events A and B are mutually exclusive, what would be the ...

[Jipu 123]

If two events A and B are mutually exclusive, what would be the addition rule?
 
  A) P(A  B) = P(A) + P(B)
  B) P(A  B) = P(A) + P(B)
  C) P(A  B) = P(A)
  D) P(A  B) = P(A) - P(B)

Question 2

In developing an interval estimate for a population mean, the population standard deviation  is assumed to be 8. The interval estimate is 45.82  2.36. What will be the interval estimate for the population mean if  is equal to 16?
 
  A) 45.82  4.72
  B) 45.82  2.36
  C) 45.82  9.44
  D) 45.82  5.56

[Liddy]

Answer to Question 1

A

Answer to Question 2

A

[Jipu 123]

Thanks for the timely response, appreciate it

[daiying98]

Gracias!