A batch containing a very large number of reels of synthetic fibers has arrived

Question

A batch containing a very large number of reels of synthetic fibers has arrived at the rope makers. The fibers are required to have a mean breaking strain of at least 500g. To check whether the batch is acceptable, a piece was cut from each of 10 reels and the breaking strain was measured. The resulting data were normally distributed. To form a confidence interval for the mean breaking strain of the batch, the number of degrees of freedom for the required t-distribution is OA 8 B None of (a) to (d) O D 10 O E 11

Explanation / Answer

Here piece was cut from each of 10 reels and the breaking strain was measured

Heren = 10

Degrees of freedom is n - 1

n - 1 = 10 - 1 = 9

Answer is 9

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

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