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The weights at birth of five randomly chosen baby Orca whales were 425, 454, 380, 405, and 426 pounds. Assume the distribution of weights is normally distributed. Find a 95% confidence interval for the mean weight of all baby Orca whales. Use technology for your calculations. Give the confidence interval in the form " estimate margin of error ± ".

Round to the nearest tenth of a pound.

a. There is not enough information given to calculate the confidence interval.

b. 384.0 68.0 ± pounds

c. 418.0 34.0 ± pounds

d. 418.0 34.5 ± pounds

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