The length of human pregnancies is approximately normally distributed with mean 266 days and standard deviation 26 days. Consider taking samples of size n = 20; thereby, creating a Sampling Distribution. What is the probability that a random sample of 20 pregnancies will have a sample mean length more than 270 days? Use the normal probability graph below to label and shade the picture correctly for this problem. OA 0.2451 OB.0.7549 OC0.5596 O D.0.4404

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The length of human pregnancies is approximately normally distributed with mean 266 days and standard deviation 26
days. Consider taking samples of size n = 20; thereby, creating a Sampling Distribution.
What is the probability that a random sample of 20 pregnancies will have a sample mean length more than 270 days?
Use the normal probability graph below to label and shade the picture correctly for this problem.
O A. 0.2451
O B. 0.7549
OC.0.5596
O D. 0.4404
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Transcribed Image Text:The length of human pregnancies is approximately normally distributed with mean 266 days and standard deviation 26 days. Consider taking samples of size n = 20; thereby, creating a Sampling Distribution. What is the probability that a random sample of 20 pregnancies will have a sample mean length more than 270 days? Use the normal probability graph below to label and shade the picture correctly for this problem. O A. 0.2451 O B. 0.7549 OC.0.5596 O D. 0.4404 Save All Answers Save and Submi Click Save and Submit to save and submit. Click Save All Answers to save all answers. 44°F e Type here to search 1- 10/05/17 Esc C F5 FI PrtSc F2 F3 F4 F6 F7 F8 Insert Delete F9 F10 F11 F12 & 2 5 7 80 Backspace Num Lock E T U Tab Hore A S FG CapsLk D + II P CO %#3
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