A sample of 55 research cotton samples resulted in a sample average percentage e

Question

A sample of 55 research cotton samples resulted in a sample average percentage elongation of 8.17 and a sample standard deviation of 1.45. Calculate a 95% large-sample CI for the true average percentage elongation mu. (Round your answers to three decimal places.) What assumptions are you making about the distribution of percentage elongation? We assume the distribution of percentage elongation is normal with the value of sigma unknown. We assume the distribution of percentage elongation is uniform. We make no assumptions about the distribution of percentage elongation. We assume the distribution of percentage elongation is normal with the value of sigma known.

Explanation / Answer

95 %Confidence Interval:

±0.38
Range for the true average elongation
7.79 to 8.55

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

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