Research commissioned by AT&T and conducted by Braun Research in 2015 polled 2,067 people in the U.S aged 16-65 who use their smartphone and drive at least once a day. An unsettling 17% of the respondents admitted to taking pictures/ selfies while driving. a. What is the point estimate for the proportion of drivers who take pictures with a smartphone while driving? b. What is the multipler for a 90% confidence interval to estimate the proportion of drivers who take photos? c. What is the standard error for the proportion who take photos? d. What is the margin of error? e. Construct a confidence interval for proportion of all drivers who take pictures while driving. f. Interpret the interval. g. A friend claims that 25% of drivers take pictures while behind the wheel. Is your friend's claim valid? Explain
Research commissioned by AT&T and conducted by Braun Research in 2015 polled 2,067 people in the U.S aged 16-65 who use their smartphone and drive at least once a day. An unsettling 17% of the respondents admitted to taking pictures/ selfies while driving.
a. What is the point estimate for the proportion of drivers who take pictures with a smartphone while driving?
b. What is the multipler for a 90% confidence
c. What is the standard error for the proportion who take photos?
d. What is the margin of error?
e. Construct a confidence interval for proportion of all drivers who take pictures while driving.
f. Interpret the interval.
g. A friend claims that 25% of drivers take pictures while behind the wheel. Is your friend's claim valid? Explain
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