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10 cards from this deck
XXX is normally distributed, mean 30, SD 3 (9\sqrt{9}9).
Calculate area right of 303030 using Normal CD function.
P(X≥k)P(X \geq k)P(X≥k) equals P(X>k)P(X > k)P(X>k) due to thin strips having area 0.
P(X≥mean)=0.5P(X \geq \text{mean}) = 0.5P(X≥mean)=0.5 for normal distributions.
The curve is bell-shaped and symmetrical around the mean.
Use a very large number like 1E101E101E10 for infinity.
Use Normal CD with Lower: -999999, Upper: 18, SD.
P=0.0766P = 0.0766P=0.0766, indicating 7.66%7.66\%7.66% of women are shorter.
P=0.1906P = 0.1906P=0.1906 for women in that height range.
P(X≥5)=1−P(X≤4)P(X \geq 5) = 1 - P(X \leq 4)P(X≥5)=1−P(X≤4) using binomial distribution.
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