Homework: Section 9.3 Score: 0 of 1 pt 5 of 5 (1 complete) 9.3.14 The data to th

Question

Homework: Section 9.3 Score: 0 of 1 pt 5 of 5 (1 complete) 9.3.14 The data to the right represent the age (in weeks) at 20 34 41 56 which babies first crawl based on a survey of 12 21 52 21 35 mothers. It is known that the data are normally 29 33 58 47 distributed and that s 13.61 weeks. Construct an 80% confidence interval for the population standard deviation of the age n weeks) at which babies fir Crawl The 80% confidence interval is (Use ascending order. Round to two decimal places as needed.) Save HW Score: 20% 1 of 5 pts Question Help

Explanation / Answer

Answer - 5:

The statistical software output for this problem is:

One sample T confidence interval:
: Mean of variable

80% confidence interval results:

Hence,

The 80% confidence interval is (31.89, 42.61)

Variable Sample Mean Std. Err. DF L. Limit U. Limit var10 37.25 3.927612 11 31.894975 42.605025

Related Questions

Navigate

• Browse (All)
• Browse H
• Subjects

---

---

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