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7.13 Sample vs. Census You are receiving a large shipment of batteries and want to test their lifetimes. Explain why you would want to test a sample of batteries rather than the entire population.

7.13 Sample vs. Census You are receiving a large shipment of batteries and want to test their lifetimes. Explain why you would want to test a sample of batteries rather than the entire population.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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7.12 7.13 7.14 7.15 7.16 What symbol would De Samples and Populations The Centers for Disease Control and Prevention (CDC) conducts an annual Youth Risk Behavior Survey, surveying over 15,000 high school students. The 2015 survey reported that, while cigarette use among high school youth had declined to its lowest levels, 24% of those surveyed reported using e-cigarettes. Identify the sample and population. Is the value 24% a parameter or a statistic? What symbol would we use for this value? Sample vs. Census You are receiving a large shipment of batteries and want to test their lifetimes. Explain why you would want to test a sample of batteries rather than the entire population. Sampling GPAs Suppose you want to estimate the mean grade point average (GPA) of all students at your school. You set up a table in the library asking for volunteers to tell you their GPAs. Do you think you would get a representative sample? Why or why not? Sampling with and without Replacement Explain the difference between sampling with replacement and sampling without replacement. Suppose you have the names of 10 students, each written on a 3-inch by 5-inch notecard, and want to select two names. Describe both procedures. Simple Random Sampling Is simple random sampling usually done with or without JUL 7: Survey Sampling and Inference A 368 Aa W
Transcribed Image Text:7.12 7.13 7.14 7.15 7.16 What symbol would De Samples and Populations The Centers for Disease Control and Prevention (CDC) conducts an annual Youth Risk Behavior Survey, surveying over 15,000 high school students. The 2015 survey reported that, while cigarette use among high school youth had declined to its lowest levels, 24% of those surveyed reported using e-cigarettes. Identify the sample and population. Is the value 24% a parameter or a statistic? What symbol would we use for this value? Sample vs. Census You are receiving a large shipment of batteries and want to test their lifetimes. Explain why you would want to test a sample of batteries rather than the entire population. Sampling GPAs Suppose you want to estimate the mean grade point average (GPA) of all students at your school. You set up a table in the library asking for volunteers to tell you their GPAs. Do you think you would get a representative sample? Why or why not? Sampling with and without Replacement Explain the difference between sampling with replacement and sampling without replacement. Suppose you have the names of 10 students, each written on a 3-inch by 5-inch notecard, and want to select two names. Describe both procedures. Simple Random Sampling Is simple random sampling usually done with or without JUL 7: Survey Sampling and Inference A 368 Aa W
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