A manufacturer has developed a new fishing line, which the company claims has a mean breaking strength of 15 kilograms with a standard deviation of 0.5 kilogram. To test the hypothesis that u 15 kilograms against the alternative that u < 15 kilograms, a random sample of 50 lines will be tested. The critical region is %3D defined to be X < 14.9. Find the probability of committing a type | error.

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