An interactive poll found that 352 of 2 comma 232 adults aged 18 or older have...

An interactive poll found that 352 of 2 comma 232 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. (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?

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orchestra answered 1 year ago

an interactive poll found that 368 of 2,375 adults aged 18 or older have at least...

an interactive poll found that 368 of 2,375 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 99% 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...

An interactive poll found that 393 of 2,261 adults aged 18 or older have at least...

An interactive poll found that 393 of 2,261 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 99?% 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...

An interactive poll found that 318 of 2,308 adults aged 18 or older have at least...

An interactive poll found that 318 of 2,308 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...

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In a recent Gallup poll, 507 adults aged 18 and older were surveyed and 269 said they believed they would not have enough money to live comfortably in retirement. Use a 0.01 significance level to test the claim that the proportion of adults who do not believe they will have enough money to live comfortably in retirement is smaller than 60%. The test statistic is?: ["-2.73", "-3.19", "-3.55", "-4.21", "-1.61"] The p-value is?: ["0.0002", "0.0024", "0.0032", "0.0007", "0.0001"] Based on...

In February 2008, an organization surveyed 1040 adults aged 18 or older and found that 541...

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In February 2008, an organization surveyed 1034 adults aged 18 and older and found that 540...

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In a recent poll of 1018 adults aged 18 and over in a country, 4% of...

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