Question

test 2
score: 2/10 answered: 2/10
question 3
a poll showed that 70% of americans say they believe that marilyn monroe had an affair with jfk. what is the probability of randomly selecting someone who does not believe that marilyn monroe had an affair with jfk.
report the answer as a percent rounded to one decimal place accuracy. you need not enter the \%\ symbol.
prob = %
question help: video

Explanation:

Step1: Use the probability formula for complementary events

The probability of an event \(A\) and its complement \(\overline{A}\) satisfies \(P(A)+P(\overline{A}) = 1\). Let \(A\) be the event that a person believes Marilyn Monroe had an affair with JFK. Then \(P(A)=0.7\).

Step2: Calculate the probability of the complement event

We want to find \(P(\overline{A})\). Using the formula \(P(\overline{A})=1 - P(A)\), substitute \(P(A) = 0.7\) into the formula: \(P(\overline{A})=1 - 0.7=0.3\).

Answer:

30.0