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Sagot :
[tex]Pr(3\text{ people suffered stress once a w}eek)=\text{ 0.097336}[/tex]Explanation:
Probability that an american suffer great stress at least once a week = 46%
Pr(suffered stress once a week) = 0.46
3 people selected at randon. The probability that one is stresses doesnot affect the probability of other being stressed
To get the Probability that 3 people picked at random suffer great stress at least once a week, we will apply the multiplication rule since they are independent events:
[tex]Pr(\text{ suffered stress once a w}eek)\text{ }\times\text{ }Pr(\text{ suffered stress once a w}eek)\text{ }\times\text{ }Pr(\text{ suffered stress once a w}eek)[/tex][tex]\begin{gathered} Pr(3\text{ people suffered stresses once a w}eek)=0.46\times0.46\text{ }\times\text{ 0.46} \\ Pr(3\text{ people suffered stress once a w}eek)=\text{ 0.097336} \end{gathered}[/tex]
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