Let x denote the IQ of an individual selected at random from a certain population The value of x must be a whole number Suppose that the distribution of x can be approximated by a normal distribution with mean value 100 and standard deviation 15 Approximate the following probabilities a P(x 100) b ...

Let x denote the IQ of an individual selected at random from a certain population. The value

Question:

Let x denote the IQ of an individual selected at random from a certain population. The value of x must be a whole number. Suppose that the of x can be approximated by a normal with mean value 100 and standard deviation 15. Approximate the following probabilities:
a. P(x = 100)
b. P(x ≤ 110)
c. P(x< 110)
d. P (75 ≤ x ≤ 125)
Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...