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
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
