This Question: 2 pts 20 of 23 (22 complete) This Test: 60 pts possible Lengths o

Question

This Question: 2 pts 20 of 23 (22 complete) This Test: 60 pts possible Lengths of pregnancies (in humans) have a mean of 267.9 days and a standard deviation of 148 days. A woman tracked her pregnancy and found it to be 306 days. Find the z score for 306 days. Is such a length unusual? The z score is.(Round to two decimal places as needed) Is a pregnancy length of 306 days unusual? O B. No, because its corresponding z score is less than 2 O C. Yes, because its corresponding z score is less than 2 O D. No, because its corresponding z score is greater than 2

Explanation / Answer

Z score at x=306

Mean =267.9

S.D. = 14.8

Z = (X - ?) / ?
Z = (306 - 267.9) / 14.8

Z = 2.57432 = 2.57

A) Yes, Corresponding Z score is greater than 2

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.