A poll agency reports that 46% of teenagers aged 12-17 own smartphones. A random sample of 147 teenagers is drawn. Round your answers to at least four decimal places as needed.
A poll agency reports that 46% of teenagers aged 12-17 own smartphones. A random sample of 147 teenagers is drawn. Round your answers to at least four decimal places as needed.
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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Question
A poll agency reports that 46% of teenagers aged 12-17 own smartphones. A random sample of 147 teenagers is drawn. Round your answers to at least four decimal places as needed.

Transcribed Image Text:(d) Find the probability that the proportion of the sampled teenagers who own a smartphone is between 0.41 and 0.51.
The probability that the proportion of the sampled teenagers who own a smartphone is between 0.41 and 0.51 is
Part: 4 / 6
Part 5 of 6
(e) Find the probability that less than 50% of sampled teenagers own smartphones.
The probability that less than 50% of sampled teenagers own smartphones is
Part: 5 / 6
Part 6 of 6
(f) Would it be unusual if less than 42% of the sampled teenagers owned smartphones?
It (Choose one)
be unusual if less than 42% of the sampled teenagers owned smartphones, since the probability is

Transcribed Image Text:(a) Find the mean µ^.
The mean µn is
Part: 1 / 6
Part 2 of 6
(b) Find the standard deviation on.
The standard deviation oa is
Part: 2 / 6
Part 3 of 6
(c) Find the probability that more than 52% of the sampled teenagers own a smartphone.
The probability that more than 52% of the sampled teenagers own a smartphone is
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