Author Question: Suppose we select a supporter of US policy in Iraq, what is the probability that the person we ... (Read 55 times)

roselinechinyere27m · **on:** Jun 24, 2018

Suppose we select a supporter of US policy in Iraq, what is the probability that the person we select is female?

What will be an ideal response?

Question 2

The following values represent the annual snowfall, measured in inches, at a local ski resort over the past 10 years: 123, 87, 143, 133, 182, 176, 96, 104, 201, and 152.

What is the mean snowfall over the past 10 years? What is the standard deviation?

af · **Reply #1 on:** Jun 24, 2018

Answer to Question 1

Event S: Supports US policy in Iraq, Event F: Female.

US Policy in Iraq
Gender Support Doesn't Support Row Total
Female 0.2438 0.2862 0.53
Male 0.3762 0.0938 0.47
Column Total 0.62 0.38 1.00

P(F S) = P(F S) / P(S) = 0.2438 / 0.62 = 0.393

Answer to Question 2

Mean = 139.7, standard deviation = 38.46.