How can I compute the CDF between - infinity to TH

Please how can I compute the CDF of the shaded portion in matlab.

TH = 5.

The two PDF was generated from the code below.

pd = makedist('Normal')
x = -20:.1:20;
%pdf_x = pdf(pd,x);
pdf_x = normpdf(x,0,5);

plot(x,pdf_x,'r','LineWidth',2)
hold on

pd2 = makedist('Normal',1,1)

y = -20:.1:20;
% pdf_y = pdf(pd2,y);
pdf_y = normpdf(y,10,5);
plot(y,pdf_y,'b','LineWidth',2)

hold on

%xlim([-15 15])
xline(0,'k--', 'LineWidth',2)
xline(10,'k--', 'LineWidth',2)
xline(5,'k', 'LineWidth',2)
set(gca,'XTick',[], 'YTick', [])

hold off

Answer 1

[Paul]

Check out

doc normcdf

[Telema Harry]

normcdf(TH, Mean,Var). Did the trick.

[Paul]

Please recheck your result. The third input to normcdf() is the standard deviation, not the variance, as is also the case with normpdf().