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In a recent survey of 577 people involved in motor vehicle accidents in Florida, 412 were wearing seat belts. a) Find a point estimate of

In a recent survey of 577 people involved in motor vehicle accidents in Florida, 412 were wearing seat belts.

a) Find a point estimate of the population proportion of Florida motorists wearing seat belts.

b) Find and interpret a 95% confidence interval for the population proportion.

c) If the margin of error m=0.1, how many samples do you need to construct an 90% for the population proportion.

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