The health of the bear population in yellowstone national park is monitored by periodic measurements. a sample of 54 bears has a mean weight of 182.9 lb. assuming the standard deviation is known to be 121.8lb find a 99% confidence intreval estimate

Question

Mathematics

Malakai Robbins

13 December, 09:13

The health of the bear population in yellowstone national park is monitored by periodic measurements. a sample of 54 bears has a mean weight of 182.9 lb. assuming the standard deviation is known to be 121.8lb find a 99% confidence intreval estimate

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Caroline Grant · Answer 1

The 99% confidence interval will be found as follows:

x_bar + / - z (σ/√n)

where

z - z-score

σ-sigma

n=sample size

thus from the information given we shall have:

182.9+/-2.58 (121.8/√54)

=182.9+/-42.7632

=225.6632 or 140.1368