I use matlab to create a mixture distribution norm and exp.

the pdf and cdf are defined:

pdf_mixture = @(x,p,mu1,mu2,sigma1)p*normpdf(x,mu1,sigma1) + (1-p)*exppdf(x,mu2);

cdf_mixture = @(x,p,mu1,mu2,sigma1)p*normcdf(x,mu1,sigma1) + (1-p)*expcdf(x,mu2);

and this is the graph from the functionleft)

but this is not the goal, the goal looks like thisright)

how can i change the pdf or cdf to get the required graph.the exponential distribution should be lower than the normal distribution.