What is the approximate probability of finding

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1. A balanced coin is flipped 400 times. Determine the number x such that the probability that the number of heads is between 200 - x and 200 + x is approximately .80.

2. A noodle machine in Spumoni's spaghetti factory makes about 5 percent de- fective noodles even when properly adjusted. The noodles are then packed in crates containing 1900 noodles each. A crate is examined and found to contain 115 defective noodles. What is the approximate probability of finding at least this many defective noodles if the machine is properly adjusted?

Reference no: EM13970352

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