Mathematics, 15.07.2020 03:01, krystalScott17
Evelyn wants to estimate the percentage of people who own a tablet computer she surveys 150 indvidals and finds that 120 own a tablet computer. Identify the values needed to calculate a confidence interval at the 99% confidence level. Then find the confidence interval.
0.10 0.05 0.025 0.01 0.005
1.282 1.645 1.960 2.326 2 576
Answers: 3
, and a confidence level of 
, we have the following confidence interval of proportions.
.
, z is the value of Z that has a pvalue of 
, so 
. 
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Evelyn wants to estimate the percentage of people who own a tablet computer she surveys 150 indvidal...
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