A Gallup Poll used telephone interviews to survey a sample of 1030 U. S. residents over the age of 18 regarding their use of credit cards. The poll reported that 72% of Americans said that they had at least one credit card. Give the 95% margin of error for this estimate. m

The 95% margin of error for this estimate is 0.0274 = 2.74 percentage points.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of , and a confidence level of , we have the following confidence interval of proportions.

In which

z is the zscore that has a pvalue of .

The margin of error is:

95% confidence level

So , z is the value of Z that has a pvalue of , so .

72% of Americans said that they had at least one credit card

This means that

Give the 95% margin of error for this estimate.

The 95% margin of error for this estimate is 0.0274 = 2.74 percentage points.

the answer is d on edge

step-by-step explanation:

49%

step-by-step explanation:

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