Using Table 8.1, find the multiplier for calculating the margin of error for a confidence interval...
Using Table 8.1, find the multiplier for calculating the margin of error for a confidence interval with an 88% level of confidence.
A 95% confidence interval estimate of a mean weight of apples from a particular type of tree is 74 to 88 grams. What is the point estimate of the mean weight? Give the number only, not the units of measure.
Homework Answers
Solution :
=
(Lower confidence interval + Upper confidence interval ) / 2
Sample mean =
= (74+88) / 2=81
point estimate =81
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