Question: The time required to assemble an electronic component is normally distributed with a mean and a standard deviation of 21 minutes and 10 minutes, respectively.

The time required to assemble an electronic component is normally distributed with a mean and a standard deviation of 21 minutes and 10 minutes, respectively.[You may find it useful to reference thez table.]

a.Find the probability that a randomly picked assembly takes between 13 and 22 minutes.(Round "z" value to 2 decimal places and final answer to 4 decimal places.)

b.It is unusual for the assembly time to be above 35 minutes or below 8 minutes. What proportion of assembly times fall in these unusual categories?(Round "z" value to 2 decimal places and final answer to 4 decimal places.)

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