A Pew Research Center poll asked 1102 teenagers (12- to 17-year-olds) in the United States if they have a cell phone. Of the respondents, 71% said yes.Identify the population, the sample, and the sample statistic. Is the sampling distribution normally distributed?What is the mean and standard deviation of the sampling distribution?Find the cutoff for the highest 0.15% of sample proportions.Find the cutoffs for the middle 95% of sample proportions.

Given sample size (n) = 1102 Proportion of respondents that said yes, p = 71% = 0.71 Since you have…

Answered: A Pew Research Center poll asked 1102…

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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A Pew Research Center poll asked 1102 teenagers (12- to 17-year-olds) in the United States if they have a cell phone. Of the respondents, 71% said yes.
- Identify the population, the sample, and the sample statistic. Is the sampling distribution normally distributed?
- What is the mean and standard deviation of the sampling distribution?
- Find the cutoff for the highest 0.15% of sample proportions.
- Find the cutoffs for the middle 95% of sample proportions.

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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