-1.036 The probability that Z is equal to or less than -1.036 is 0.15, where Z is a random variable distributed by the standard normal distribution (mean = 0 and std dev = 1). You can look up the values in tables in any statistic book or use a spreadsheet program. I used Excel, and entered +norminv(0.15,0,1).
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Find the Z score that correspond to P25
50th percentile or median
See related link, In quantum mechanics, a probability amplitude is a complex number whose modulus squared represents a probability or probability density. For example, the values taken by a normalised wave function ψ are amplitudes, since |ψ(x)|2 gives the probability density at position x. Probability amplitudes may also correspond to probabilities of discrete outcomes.
The points are spaced according to the value of the number they correspond to; in a number line containing only whole numbers.If you want to know what the symbol would look like when its going a certain way, it would look like this if you started at 6 and was going to the right the arrow would be pointing > that way, if you were going left the arrow would be < that way... Hope I helped!
The standard normal table tells us the area under a normal curve to the left of a number z. The tables usually give only the positive value since one can use symmetry to find the corresponding negative values. The middle 60 percent leaves 20 percent on either side. So we want the z scores that correspond to that 80 percentile which is .804. Therefore the values are are between z scores of -.804 and .804 * * * * * I make it -0.8416 to 0.8416