How can I compute the CDF between - infinity to TH

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Telema Harry
Telema Harry 2021-4-29
评论： Paul 2021-5-1
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

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采纳的回答

Paul
Paul 2021-4-29
编辑：Paul 2021-4-29
Check out
doc normcdf
  2 个评论
Paul
Paul 2021-5-1
Please recheck your result. The third input to normcdf() is the standard deviation, not the variance, as is also the case with normpdf().

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