A normal distribution with mean value 110 and standard, Ask an Expert

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Let x denote the IQ for 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 110 and standard deviation 15. Approximate the probabilities below. (Round all answers to four decimal places.)

(a) P(x = 110) =
(b) P(x less than or equal to 130) =
(c) P(x < 130) =

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