Based on sample results, a 90% confidence interval for the mean servings of fruit per day consumed by grade school children is (0.21, 2.45). what is the margin of error?

The margin of error is 1.12.

Given

Based on sample results, a 90% confidence interval for the mean servings of fruit per day consumed by grade school children is (0.21, 2.45).

The margin of error is a statistic expressing an amount of random sampling error in a survey’s results.

The confidence interval for the mean and margin of error E is given by;

Then,

The mean servings of fruit per day consumed by grade school children are (0.21, 2.45).

Subtracting both the equations;

Hence, the margin of error is 1.12.

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1.12

Step-by-step explanation:

The confidence interval for the mean and margin of error E is given by :-

                                            --------------(1)

The given confidence interval : (0.21, 2.45)              -------------(2)

From (1) and (2), we  have

Subtract equation (3) from (4), we get

Hence, the margin of error is 1.12 .

12/11c

or

12

c

11