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Fantom [35]
2 years ago
11

Select the two recommendations that would decrease the margin of error of the interval.

SAT
1 answer:
geniusboy [140]2 years ago
8 0

From the options given, the only option which would result on having a reduced error margin, is to increase the sample size.

<u>Recall</u><u> </u><u>:</u><u> </u>

<em>Margin of Error</em> = Zcritical × σ/√n

  • Increasing the mean would have no impact on the margin of error as it is not a part of the factors which affects the margin of error value.

  • Increasing the standard deviation, which is the Numerator will result in an increased margin of error value.

  • By raising the confidence level, the critical value of Z will increase, hence widening the margin of error.

  • The sample size, n being the denominator, would reduce the value of error margin.

Hence, only the sample size will cause a decrease in the margin of error of the interval.

Learn more : brainly.com/question/25569754

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