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Chapter 3: Q. 79 (page 221)

Use the following information to answer the next twelve12exercises. The graph shown is based on more than170,000interviews done by Gallup that took place from January through December2012. The sample consists of employed Americans18years of age or older. The Emotional Health Index Scores are the sample space. We randomly sample one Emotional Health Index Score.


If all occupations are equally likely for a certain individual, what is the probability that he or she will have an occupation with lower than average EHIS?

Short Answer

Expert verified

The Probability lower than average EHIS is12.

Step by step solution

01

Definition for probability

The probability of a random event's result is referred to as probability. This term refers to evaluating the likelihood of a particular event that took place.

P(E)=NumberofPositiveOutcomesTotalNumberofOutcomes

P(E)=n(E)n(S)

02

Calculation for probability lower than average

In an Emotional Health Index score, there are 14vocations.

Average of EHIS is,

Average =Totaloccupations2

=142

=7

The probability is,

P(A)=AverageTotalnoofevents

P(A)=714

=12

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Most popular questions from this chapter

The probability that a man develops some form of cancer in his lifetime is 0.4567. The probability that a man has at least one false positive test result (meaning the test comes back for cancer when the man does not have it) is 0.51 Let: C = a man develops cancer in his lifetime; P = man has at least one false positive. Construct a tree diagram of the situation.

Write the symbols for the probability that of all the outfielders, a player is not a great hitter.

Use the following information to answer the next three exercises. The casino game, roulette, allows the gambler to bet on the probability of a ball, which spins in the roulette wheel, landing on a particular color, number, or range of numbers. The table used to place bets contains of 38numbers, and each number is assigned to a color and a range.

Compute the probability of winning the following types of bets:

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Use the following information to answer the next six exercises. There are 23countries in North America, 12countries in

South America, 47countries in Europe, 44countries in Asia, 54countries in Africa, and 14in Oceania (Pacific Ocean

region).

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.

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