What is the probability that the proportion of the people from Fisherville have a cell-phone and the proportion of residents from Smithville that have a cell phone from the samples is within 7% of each other? (Hint: You will do a ?̂1 − ?̂2 ) (Show conditions and treat as an FRQ)

What is the probability that the proportion of the people from Fisherville have a cell-phone and the proportion of residents from Smithville that have a cell phone from the samples is within 7% of each other? (Hint: You will do a ?̂1 − ?̂2 ) (Show conditions and treat as an FRQ)

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section11.8: Probabilities Of Disjoint And Overlapping Events

Problem 2C

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Question

9) It is believed that 90% of the residents in Fisherville own a
cellphone and 86% of the residents in Smithville own a phone. A
sample of 200 residents in Fisherville and 300 people in
Smithville are taken. What is the probability that the proportion
of the people from Fisherville have a cell-phone and the
proportion of residents from Smithville that have a cell phone
from the samples is within 7% of each other? (Hint: You will do
a ?̂1 − ?̂2 ) (Show conditions and treat as an FRQ)

Expert Solution