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An interactive poll found that 3865 of 2,322 adults aged 18 or older have at least one tattoo. (a) Obtain a point estimate for the

An interactive poll found that 3865 of 2,322 adults aged 18 or older have at least one tattoo.

(a) Obtain a point estimate for the proportion of adults who have at least one tattoo.

(b) Construct a 95%confidence interval for the proportion of adults with at least one tattoo.

(d) What is the effect of increasing the level of confidence on the width of theinterval?

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