Question 1058438
Calculate a z score for each case. I'll do one you do the others.
1.{{{z=(110-100)/20=10/20=1/2}}}
{{{P(x>110)=P(z>1/2)=1-P(z<=1/2)=1-0.691462=0.309}}}
2.{{{P=P(x<=125)-P(x<=100)=P(x<=125)-0.5}}}
3.{{{P=P(x<=115)-P(x<=75)}}}
4.{{{P=P(x<=120)}}}