Assignment help 624

An interactive poll found that 314 of 2,278 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 90?% confidence interval for the proportion of adults with at least one tattoo.

?(c) Construct a 98?% 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 the? interval?

?(a) ModifyingAbove p with caretequals

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?(Round to three decimal places as? needed.)

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