A research center claims that more than 65% of US adults have used a cellular phone...
A research center claims that more than 65% of US adults have used a cellular phone to access the internet. In a random sample of 125 adults, 69% say that they have used a cellular phone to access the internet. The value of the test statistic is about
Homework Answers
Given that, sample size ( n ) = 125
sample proportion 
=
0.69
The null and the alternative hypotheses are,
H0: p = 0.65
Ha : p > 0.65
Test statistic is,
Test statistic is, Z = 0.94
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A research center claims that more than 65% of US adults have
used a cellular phone...
In a random sample of 125 adults, 64% say they have used a cellular phone to...
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