From the normal distribution it is calculated that 9.18% of people has an iq over 120.
Normal distributions are crucial to statistics because they are widely used in the natural and social sciences to represent real-valued regressors with unknown distributions.
Some of their significance can be attributed to the central limit theory.
This claim states that, in some cases, the average of many samples (observations) of a stochastic process with limited mean and variance constitutes itself as a random variable, whose distribution merges to a normal distribution as the number of samples increases.
Because of this, the distributions of physical values, such as error margins, which are expected to be the sum of many independent events, are frequently near to normal.
robert dives 40 ft.....-40 he then rises 23 ft.....-40 + 23 = -17 he then dives 19 ft to meet Sam....-17 - 19 = -36 together they rise 31 ft...-36 + 31 = - 5
In a shipment of 7,000 pairs of shoes, 1,080 thousand pairs of shoes are likely to have defects on them. The rest 5,920 pairs of shoes are likely to not have defects on them. I hope this helps !