Question 327173
Find the z-score for each,
{{{z=(x-mu)/sigma}}}
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{{{z1=(5-6)/0.5=-2}}}
{{{z2=(7.5-6)/0.5=3}}}
Find P(z1) and P(z2).
{{{P(z1)=0.02275}}}
{{{P(z2)=0.99865}}}
To find the probability for the range, subtract.
{{{P=0.99865-0.02275}}}
{{{P=0.9759}}}
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a) is the correct answer.