Suppose data collected by observers at randomly selected intersections across the country revealed that in a sample of 100 drivers, 76 were using their cell phone. a. Give a point estimate of p, the true driver cell phone use rate (that is, the true proportion of drivers who are using their cell phone while driving). A point estimate for p is b. Compute a 90% confidence interval for p. The 90% confidence interval for p is (Round to two decimal places as needed.)

MATLAB: An Introduction with Applications
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Suppose data collected by observers at randomly selected intersections across the country revealed that in a sample of 100 drivers, 76 were using their cell phone.
a. Give a point estimate of p, the true driver cell phone use rate (that is, the true proportion of drivers who are using their cell phone while driving).
A point estimate for p is .
b. Compute a 90% confidence interval for p.
The 90% confidence interval for p is ( ).
(Round to two decimal places as needed.)
Transcribed Image Text:Suppose data collected by observers at randomly selected intersections across the country revealed that in a sample of 100 drivers, 76 were using their cell phone. a. Give a point estimate of p, the true driver cell phone use rate (that is, the true proportion of drivers who are using their cell phone while driving). A point estimate for p is . b. Compute a 90% confidence interval for p. The 90% confidence interval for p is ( ). (Round to two decimal places as needed.)
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