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Chapter 3: Q. 78 (page 221)

Use the following information to answer the next twelve12exercises. The graph shown is based on more than 170,000interviews done by Gallup that took place from January through December 2012. The sample consists of employed Americans 18years of age or older. The Emotional Health Index Scores are the sample space. We randomly sample one Emotional Health Index Score.

Compute the average EHIS.

Short Answer

Expert verified

The average of Emotional health index scores is81.3.

Step by step solution

01

Definition for Average

An average may be a single number that represents a set of numbers, often the sum of the quantity's divided by the number of numbers within the collection (the arithmetic mean).

x炉=1n鈭�i=1nxi

localid="1649372305444" nis number of events.

02

Calculation for Average

There are14events in total.

We'll work out the common EHIS by putting all of the scores together and dividing the overall by14.

EHIS炉=114鈭�i=114EHISi

=79.6+80+80.1+80.2+80.3+80.7+80.9+81.5+81.7+81.8+82.3+82.7+82.7+83.714

EHIS炉=1141138.2

localid="1649366495851" =1138.214

=81.3

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Most popular questions from this chapter

Use the following information to answer the next ten exercises. On a baseball team, there are infielders and outfielders.

Some players are great hitters, and some players are not great hitters.

Let I = the event that a player in an infielder.

Let O = the event that a player is an outfielder.

Let H = the event that a player is a great hitter.

Let N = the event that a player is not a great hitter.

Write the symbols for the probability that a player is not an outfielder.

Use the following information to answer the next 12exercises. The graph shown is based on more than localid="1648902668215">170,000interviews done by Gallup that took place from January through December 2012. The sample consists of employed Americans 18years of age or older. The Emotional Health Index Scores are the sample space. We randomly sample one Emotional Health Index Score.

If we know an Emotional Health Index Score is 81.5 or more, what is the probability that it is 82.7.

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.

Let S = the event that a country is in South America.

Find P(F).

United Blood Services is a blood bank that serves more than 500hospitals in 18 states. According to their website, a person with type O blood and a negative Rh factor (Rh-) can donate blood to any person with any blood type. Their data show that 43% of people have type O blood and 15% of people haveRh- factor; 52%of people have type O or Rh- factor.

a. Find the probability that a person has both typeO blood and the Rh- factor.

b. Find the probability that a person does NOT have both type O blood and the Rh- factor

Forty-eight percent of all Californians registered voters prefer life in prison without parole over the death penalty for a person convicted of first degree murder. Among Latino California registered voters, 55%prefer life in prison without parole over the death penalty for a person convicted of first degree murder. 37.6%of all Californians are Latino. In this problem, let: 鈥� C = Californians (registered voters) preferring life in prison without parole over the death penalty for a person convicted of first degree murder. L = Latino Californians. Suppose that one Californian is randomly selected.

In words, what is C|L?
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