The following data show the number of hours per day 12 adults spent in front of

Question

The following data show the number of hours per day 12 adults spent in front of screens watching television-related content. Complete parts a and b below 1.3 5.1 4.2 5.4 7.8 7.4 5.9 2.3 5.7 1.5 2.4 8.9 a. Construct a 99% confidence interval to estimate the average number of hours per day adults spend in front of screens watching television-related content. The 99% confidence interval to estimate the average number of hours per day adults spend in front of screens watching television-related content is from ___ hours to ___hours. (Round to two decimal places as needed.)

Explanation / Answer

margin of error = z-score * std/sqrt(n)

= 2.575 * 2.5324 /sqrt(12)

= 1.8824

lower bound = 4.825 - 1.8824 = 2.9426 = 2.94

upper bound = 4.825 + 1.8824 = 6.7074 = 6.71

hence it is from 2.94 to 6.71

1.3 5.1 4.2 5.4 7.8 7.4 5.9 2.3 5.7 1.5 2.4 8.9 mean 4.825 standard deviation 2.5324

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

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