A state highway patrol official wishes to estimate the number of drivers that exceed the speed limit traveling a
certain road.
a)How large a sample is needed in order to be 90% confident that the sample proportion will not differ from
the true proportion by more than 3%?
b)Repeat part (a)assuming previous studies found that 80% of drivers on this road exceeded the speed limit.

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The Answer of A state highway patrol official wishes to estimate the number of drivers that exceed the speed limit traveling a
certain road.
a)How large a sample is needed in order to be 90% confident that the sample proportion will not differ from
the true proportion by more than 3%?
b)Repeat part (a)assuming previous studies found that 80% of drivers on this road exceeded the speed limit.

A State Highway Patrol Official Wishes to Estimate the Number