Adata set has a mean of 112 and a standard deviation of 2.5.

what is the margin of error for this data set?

a. 224

b. 5

c. 56

d. 1.25

The margin of error for this data set is option B )5

Step-by-step explanation:

Given that a data set has a mean of 112 and a std deviation of 2.5

Since confidence interval level is not given, we can take it as 95% normally used much in finding margin of errors.

For 95% confidence interval, Z critical value is 1.96 or approximately 2.

Margin of error = Z critical * std deviation

= 2(2.5)

=5

Hence option B would b the right answer

The margin of error for this data set is option B )5

x= 149. 24+7=31. 180-31=149

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