Q and R are independent events. and . Find P(R).
Independent event are ones whose event is not contingent on the occurrence of another event.
It is given that Q and R are independent events.
Therefore, P(R) can be calculated as follow:
Use the following information to answer the next six exercises. There are countries in North America, countries in
South America, countries in Europe, countries in Asia, countries in Africa, and in Oceania (Pacific Ocean
Let A = the event that a country is in Asia.
Let E = the event that a country is in Europe.
Let F = the event that a country is in Africa.
Let N = the event that a country is in North America.
Let O = the event that a country is in Oceania.
Let S = the event that a country is in South America.
Use the following information to answer the next exercises. The graph shown is based on more than interviews done by Gallup that took place from January through December . The sample consists of employed Americans years of age or older. The Emotional Health Index Scores are the sample space. We randomly sample one Emotional Health Index Score.
What occupation has the lowest emotional index score?
After Rob Ford, the mayor of Toronto, announced his plans to cut budget costs in late , the Forum Research polled people to measure the mayor’s popularity. Everyone polled expressed either approval or disapproval. These are the results their poll produced:
• In early percent of the population approved of Mayor Ford’s actions in office.
• In mid- percent of the population approved of his actions.
• In late , the percentage of popular approval was measured at percent.
a. What is the sample size for this study?
b. What proportion in the poll disapproved of Mayor Ford, according to the results from late ?
c. How many people polled responded that they approved of Mayor Ford in late ?
d. What is the probability that a person supported Mayor Ford, based on the data collected in mid-?
e. What is the probability that a person supported Mayor Ford, based on the data collected in early ?
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