# Doing homework A school newspaper article claims that 60% of the students at a large

## Problem 9 Chapter 7.1

The Practice of Statistics | 5th Edition

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Problem 9

Doing homework A school newspaper article claims that 60% of the students at a large high school did all their assigned homework last week. Some skeptical AP Statistics students want to investigate whether this claim is true, so they choose an SRS of 100 students from the school to interview. What values of the sample proportion p^ would be consistent with the claim that the population proportion of students who completed all their homework is p = 0.60? To find out, we used Fathom software to simulate choosing 250 SRSs of size n = 100 students from a population in which p = 0.60. The figure below is a dotplot of the sample proportion p^ of students who did all their homework. (a) There is one dot on the graph at 0.73. Explain what this value represents. (b) Describe the distribution. Are there any obvious outliers? (c) Would it be surprising to get a sample proportion of 0.45 or lower in an SRS of size 100 when p = 0.6? Justify your answer. (d) Suppose that 45 of the 100 students in the actual sample say that they did all their homework last week. What would you conclude about the newspaper articles claim? Explain.

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Business Statistics Notes Week 1 & 2: August 23, August 30 Quantitative Data:  Discrete (e.g. number of children)  Continuous (e.g. weight, volume) Qualitative Data: information about qualities; information that can't actually be measured Nominal Data (nomial­names)  Lowest form of data (e.g. comparison)  Nonnumeric label/code  Equality (=) relationship...

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##### ISBN: 9781464108730

Since the solution to 9 from 7.1 chapter was answered, more than 213 students have viewed the full step-by-step answer. This full solution covers the following key subjects: . This expansive textbook survival guide covers 44 chapters, and 1409 solutions. The full step-by-step solution to problem: 9 from chapter: 7.1 was answered by Patricia, our top Statistics solution expert on 03/19/18, 03:52PM. This textbook survival guide was created for the textbook: The Practice of Statistics, edition: 5. The Practice of Statistics was written by Patricia and is associated to the ISBN: 9781464108730. The answer to “Doing homework A school newspaper article claims that 60% of the students at a large high school did all their assigned homework last week. Some skeptical AP Statistics students want to investigate whether this claim is true, so they choose an SRS of 100 students from the school to interview. What values of the sample proportion p^ would be consistent with the claim that the population proportion of students who completed all their homework is p = 0.60? To find out, we used Fathom software to simulate choosing 250 SRSs of size n = 100 students from a population in which p = 0.60. The figure below is a dotplot of the sample proportion p^ of students who did all their homework. (a) There is one dot on the graph at 0.73. Explain what this value represents. (b) Describe the distribution. Are there any obvious outliers? (c) Would it be surprising to get a sample proportion of 0.45 or lower in an SRS of size 100 when p = 0.6? Justify your answer. (d) Suppose that 45 of the 100 students in the actual sample say that they did all their homework last week. What would you conclude about the newspaper articles claim? Explain.” is broken down into a number of easy to follow steps, and 204 words.

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