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ox File Edit View History Bookmarks Tools Window Help mathxl. MTH 240-41H Quiz: Ch 7 Quiz Submit Quiz This Question: 4 pts 40f 15 (0 complete) This Quiz: 42 pts possible The lengths of human pregnancies are normally distributed with -266 days and -16 days. Complete parts (a) and (b) below. (a) The following figure represents the normal curve with -266 days and = 16 days. The area to the left of X . 230 is 0.0122. Provide an interpretation of this area. Choose the correct answer below O A. The proportion of human pregnancies that last less than 230 days is 0.9878. O B. The proportion of human pregnancies that last more than 230 days is 0.0122 O C. The proportion of human pregnancies that last less than 266 days is 0.4878. O D. The proportion of human pregnancies that last less than 230 days is 0.0122 Provide a second interpretation of the area. Choose the correct answer below. O A. 0 B. O C. O D. The probability that a randomly selected human pregnancy lasts less than 230 days is 0.0122 The probability that a randomly selected human pregnancy lasts less than 230 days is 0.4878. The probability that a randomly selected human pregnancy lasts more than 230 days is 0.0122. The probability that a randomly selected human pregnancy lasts less than 230 days is 0.9878. (b) The following figure represents the normal curve with =266 days and = 16 days. The area between x 280 and x=295 is 0.1558. Provide an interpretation of this area. Choose the correct answer below A. The proportion of human pregnancies that last between 280 and 295 days is 08442. O B. The proportion of human pregnancies that last for 295 days is 0.9650 O C. The proportion of human pregnancies that last between 280 and 295 days is 0.1558. O D. The proportion of human pregnancies that last more than 295 days is 0.8442Explanation / Answer
a) Correct answer: Option (D)
Correct answer: Option (A)
b)
Correct answer: Option (C)
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