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QUESTION

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...

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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