Since approximately 95% of any normal distribution falls within two standard deviations of the mean, it follows that 5% falls outside that range, with 2.5% to either side. So
The actual value is a bit closer to 0.0228, but that's not very far off.
[(21 + 5) ÷ 2] + 7 • (8 - 3) equals
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Since approximately 95% of any normal distribution falls within two standard deviations of the mean, it follows that 5% falls outside that range, with 2.5% to either side. So
The actual value is a bit closer to 0.0228, but that's not very far off.