Consider a normal population distribution with the value of o known. What is the

Question

Consider a normal population distribution with the value of o known. What is the confidence level for the Interval x plusminus 2.81 sigma/squareroot n? (Round your answer to one decimal place.) % What is the confidence level for the Interval x plusminus 1.48 sigma squareroot n? (Round your answer to one decimal place.) % What value of z sigma/2 In the Cl formula below results in a confidence level of 99.7%? (Round your answer to two decimal places.) Answer the question posed in part (c) for a confidence level of 75%. (Round your answer to two decimal places.) z sigma/2= may need to use the appropriate table In the Appendix of tables to answer this question.

Explanation / Answer

1. 99.5%

2.70.1%

c 2.96

d. 1.15

kindly correct it it is option b 70.1%

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