I have a math problem please help?



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I have a math problem please help? and got a better answer

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Response from 0[+++++]
Event A - a randomly chosen part of 1st grade Hypotheses: H1 - the part is produced by the 1st machine H2 - the part is produced by the 2nd machine H3 - the part is produced by the 3rd machine Hypothesis probabilities: P H1= 40 + a + c /100 P H2= 35-a-in /100 P H3= 25/100 from problem statement: P H1 A=0.9 P H2 A=0.8 P H3 A=0.7 According to the full likelihood formula: P A= 40 + a + c /100 *0.9 + 35-a-in /100 *0.8 +0.25*0.7 Maybe there is something else to simplify. I performed the transformation and got that P A=0.001a +0.001b +0.815 check calculations

Response from 0[+]
I looked again at the condition it turns out: 40 + a + in + 35-a-in =75 It turns out that the ver-ti are independent of a and c and are respectively 0 4 and 0 35? I'm so confused.

 

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