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Chapter 11: Q.11.3 (page 459)

Is a population proportion a parameter or a statistic? What about a sample proportion? Explain your answers.

Short Answer

Expert verified

Population proportion is a parameter.

Sample proposition is a statistic.

Step by step solution

01

Given information

Given in the question that, we need to find that whether a population proportion is a parameter or a statistic.

02

Explanation

Parameter :A parameter is a value that is calculated from a set of data.

Statistic :A statistic is a numerical value derived from a sample.

As the population proportion is a descriptive measure of population, it is obvious that it is a parameter. Because it is a descriptive measure of sample, the sample proposition is a statistic.

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Most popular questions from this chapter

x1=18,n1=30,x2=10,n2=20;95%confidence interval

11.91 Economic Stimulus. In a national poll, 1053 U.S. adults were asked, "As you may know, Congress is considering a new economic stimulus package of at least 800 billion dollars. Do you favor or oppose Congress passing this legislation?" Of those sampled, 548 favored passage.
a. At the 5% significance level, do the data provide sufficient evidence to conclude that a majority (more than 50% ) of U.S. adults favored passage?
b. The headline on the website featuring the survey read, "In U.S., Slim Majority Supports Economic Stimulus Plan." In view of your result from part (a), discuss why the headline might be misleading.
c. How could the headline be made more precise?

For what is the phrase "number of failures" an abbreviation?

a. Determine the sample proportion.

b. Decide whether using the one-proportion z-test is appropriate.

c. If appropriate, use the one-proportion z-test to perform the specified hypothesis test.

x=16

n=20

H0:p=0.7

Ha:p鈮�0.7

a=0.05

In a newspaper or magazine of your choice, find a statistical study that contains an estimated population proportion.
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