Assume that x has a normal distribution with the specified mean and standard deviation. Find the indicated probability. (Round your answer to four decimal places.) μ = 49; σ = 14
P(40 ≤ x ≤ 47) =
Normal distribution: P(X < A) = P(Z < (A - )/)
= 49
= 14
P(40 x 47) = P(x 47) - P(x 40)
= P(Z < (47 - 49)/14) - P(Z < (40 - 49)/14)
= P(Z < -0.14) - P(Z < -0.64)
= 0.4443 - 0.2611
= 0.1832
Get Answers For Free
Most questions answered within 1 hours.