A hint to get started
Locate the mean midway between equal normal tails
and . Find μ and σ.
[2009/MI/BT/II/9(a)(modified)]
CJC · Discussion · Question 5
Equal tails place the two cutoffs symmetrically around the mean.
Read the worked solution
A hint to get started
X∼N(μ,σ2) and P(X<85)=P(X>101)=0.0548. Find μ and σ.
[2009/MI/BT/II/9(a)(modified)]
CJC · Discussion · Question 5
Equal tails place the two cutoffs symmetrically around the mean.