Consider a normal population distribution with the value of known. (a) what is t

Question

Consider a normal population distribution with the value of known. (a) what is the confidence level for the interval x ± 2.81g/Vn? (Round your answer to one decimal place.) (b) What is the confidence level for the interval 1.450/Vn? (Round your answer to one decimal place.) (c) What value of za/2 in the CI formula below results in a confidence level of 99.7%? (Round your answer to two decimal places.) a/2 Vn za/2 = (d) Answer the question posed in part (c) for a confidence level of 78%. (Round your answer to two decimal places.) Za/2 =

Explanation / Answer

a) The level can be found in normal table:

Confidence level for z = 2.81 is 99.5%

b) z = 1.45

Confidence level for z = 1.45 is 85.3%

c) Level = 99.7%

z = 2.97

d) Level = 78%

z = 1.23

Related Questions

Navigate

• Browse (All)
• Browse C
• Subjects

---

---

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