Q: What is the area within the normal curve between -1SD and plus 1 SD?

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The area under the normal curve is ALWAYS 1.

0.1972

yes, since according to the 68-95-99.7 rule, the area within 3 standard deviations is 99.7%

Look in any standard normal distribution table; one is given in the related link. Find the area for 2.43 and 1.52; then take the area for 2.43 and subtract the area for 1.52 and that will be the answer. Therefore, .9925 - .9357 = .0568 = area under the normal distribution curve between z equals 1.52 and z equals 2.43.

The area under N(0,1) from -1 to 1 = 0.6826

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Characteristics of a Normal Distribution1) Continuous Random Variable.2) Mound or Bell-shaped curve.3) The normal curve extends indefinitely in both directions, approaching, but never touching, the horizontal axis as it does so.4) Unimodal5) Mean = Median = Mode6) Symmetrical with respect to the meanThat is, 50% of the area (data) under the curve lies to the left ofthe mean and 50% of the area (data) under the curve liesto the right of the mean.7) (a) 68% of the area (data) under the curve is within onestandard deviation of the mean(b) 95% of the area (data) under the curve is within twostandard deviations of the mean(c) 99.7% of the area (data) under the curve is within threestandard deviations of the mean8) The total area under the normal curve is equal to 1.

The area under the standard normal curve is 1.

The area under the normal curve is ALWAYS 1.

It is 0.9955 of the total area.

~0.0606

Approx 0.0606

It is 0.1353

0,0367

0.1972