Mathematics, 08.08.2019 02:10 kaileyy06
We are interested in p, the population proportion of all people who are currently happy with their cell phone plans. in a small study done in 2012, it was found that in a sample of 150 people, there were 90 who were happy with their cell phone plans. using the data from this prior study, find the sample size needed to construct a 95% confidence interval for p with a margin of error of 0.025
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