Question 324334
Find the z scores for 25000 and 28000.
{{{z1=(x-mu)/sigma=(25000-30000)/2000=-2.5}}}
{{{z2=(x-mu)/sigma=(28000-30000)/2000=-1.0}}}
Find the corresponding P(z).
{{{P(z1)=0.00621}}}
{{{P(z2)=0.15866}}}
Subtract the probabilities to find the probability for the range,
({{{25000<=x<=28000}}})
{{{P(x)=0.15866-0.00621=0.1524}}}