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We are interested in how long on average it takes Deadpool to grow back a leg....

We are interested in how long on average it takes Deadpool to grow back a leg. A simple random sample of 25 occasions results in an average of 62 minutes before Deadpool's leg grows back. Assume that the standard deviation of all grow-back-times is 10 minutes.
(a)The 80% confidence interval for Deadpool's average time to grow back a leg is ( ,   ). (Answers to two places after the decimal.)

(b)Unless our sample is among the most unusual 5% of samples, Deadpool's average time to grow back a leg is between ( ) and ( ) . (Answers to two places after the decimal.)

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