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14) A company makes 1% resistors that are normally distributed. See Z-tables. For a 1 kΩ...

14) A company makes 1% resistors that are normally distributed. See Z-tables. For a 1 kΩ resistor with a mean = 1,000 ohms and standard deviation = 13.33.

a) Find P(X > 1,010 ohms) ? (2.5 points)

b) What value of σ is required for P( 990 < X < 1,010 ohms) > 0.98 ?

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