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Chapter 3: Q.74 (page 221)

Use the following information to answer the next 12 exercises. The graph shown is based on more than interviews 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.

What is the probability that an Emotional Health Index Score is less than 80.2given that it is already less than 81.

Short Answer

Expert verified

The probability that an Emotional Health Index Score is0.4286

Step by step solution

01

Introduction

The scientific skill of likely hood are often wont to analyze variance. It it's interested with the prospect (probability) of just a happening occurring. If you spin a a good coin multiple times, the results statistically probable to be two heads and two tails.



02

Probability score

There must be seven contests with only a result compared with fewer least 81.credits. And there are three contests with only a value little less that 80.2amid it. Thus suggests that its possibility is computed as follows:

P=37=0.4286

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Most popular questions from this chapter

Use the following information to answer the next two exercises. You are rolling a fair, six-sided number cube. Let E = the event that it lands on an even number. Let M = the event that it lands on a multiple of three.

What does P(E OR M) mean in words?

An experiment consists of tossing a nickel, a dime, and a quarter. Of interest is the side the coin lands on.

a. List the sample space.

b. Let A be the event that there are at least two tails. Find PA.

c. Let Bbe the event that the first and second tosses land on heads. Are the events A and B mutually exclusive?

Explain your answer in one to three complete sentences, including justification.

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

In words, explain what it means to pick one person from the study who is 鈥淛apanese American AND smokes 21to30 cigarettes per day.鈥� Also, find the probability.

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.

Find P(L AND C).
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