s Question: 10 pts 60128 (1 complete) E Question Help Assume the random variable

Question

s Question: 10 pts 60128 (1 complete) E Question Help Assume the random variable X is normally distributed with mean-50 and standard deviation o-7 Compute the probabity Be sure to draw a normal curve with the area corresponding to the probability shaded P(X> 39) Click the icon to view a table of areas under the normal curve Which of the following normal curves corresponds to PiX 39? OA. B. O C a. 30 50 50 39 50 RX-39)- Round to four decimal places as needed) Click to select your answerts). enovO Esc 2 3 4

Explanation / Answer

Thus, Z = (39-50)/ (7) = -1.57

Thus, P(X¯>39) = P(Z>-1.57) = P(Z from -1.57 to positive upper limit)

Thus option B

P(Z>-1.57) = 1 – 0.0582 = 0.9418

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