Q: What proportion of the normal curve falls below a z score of 2.58?

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0.0124

The area within the normal curve between -1 standard deviation (SD) and +1 SD is approximately 68%. This means that about 68% of the data falls within one standard deviation of the mean in a normal distribution.

The IQ, or intelligence quotient, is actually a bell curve* statistic whereby the score of 100 is dead centre meaning that half of the normal distribution falls below 100 and half fall above 100. Understand that this is not the average but the median. The median is exactly the 50th percentile, exactly. This may seem like a poor score but the bell curve has a maxima at this point so this is at least very close to where most people score. In fact, on both ends of the curve, the distribution falls rapidly off around a score of 90 on the lower end and around a score of 110 on the high end. Most websites such as IQ Basics* do consider a score between 90 and 110 to be a normal score. See the related links for more info on the highlighted topics

1 to 1, which is greater than -1.2

Absolute growth rate(agr) curve enables us to express the growth of organisms in terms f growth rate. In most organism, agr increases steadily until reaches a maximum and then, gradually falls. Agr is a bell-shaped curve.

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It is 0.017864

In a normal distribution half (50%) of the distribution falls below (to the left of) the mean.

Pr(Z > 1.16) = 0.123

By definition, the 1st 6-tile is the point below which 1/6 of the population falls (irrespective of which distribution is involved). The 2nd 6-tile is the point below which 2/6 of the population falls. This is 100 * 1/3 ~ 33.3% of the population.

0% of a normal (of any) distribution falls between z 1.16 and z 1.16. 1.16 - 1.16 = 0.

0.0124

Although I cannot prove it, I doubt that there is a nice closed-form expression for this quantity; it's probably not a rational number. It's value is approximately 0.0227501319482. (Using Python code.)

A condition in which the number of lymphocytes falls below normal levels.

The area is 0.9270, approx.

The area within the normal curve between -1 standard deviation (SD) and +1 SD is approximately 68%. This means that about 68% of the data falls within one standard deviation of the mean in a normal distribution.

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In normal demand curve, AR is equal to price and so it falls as output increases since the price has to be lowered in order to sell more products. based by: Jocelyn Blink, Ian Dorton, Economics Course companion, Oxford IB