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Question

# A researcher has constructed a confidence interval between the numbers of 4.08 and 11.92 for the confidence level

of 95% it is known that the std in the population is 20

A. What is the point estimation that led to that confidence interval?

B. What was the sample size that the researcher has used?

A. the point estimation that led to that confidence... View the full answer

Lower Bound = 4.08
1- 2 =0.95
Upper Bound = 11.92
of = 0.05
1 - 2 = 95. 1 = 0.95
2 d1 = 1. 96
0 = 20
A point estimate for interval,
= Lowes Bound + Upper Bound
2
9.08 + 11.92
2
16
2
= 8
Lower Bound...

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