Question 1062005
Using NORMSINV in EXCEL to find {{{z}}} so that {{{P(z)=0.75}}}.
{{{z=0.67449}}}
So,
{{{(X-3.5)/3=0.67449}}}
{{{X=5.52}}}{{{hrs}}}
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Find the z score,
{{{z=(5-3.5)/3=0.5}}}
So then,
{{{P(0.5)=0.691462}}}