Question 358602
Use the z-score.
{{{z=(x-mu)/sigma}}}
{{{z[1]=(130-150)/15}}}
{{{z[2]=(170-150)/15}}}
Then find {{{P(z[1])}}} and {{{P(z[2])}}}.
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 {{{P(130<x<170)=P(z[2])-P(z[1])}}}