I only need help on part D Please explain what formula you are using and the var

Question

I only need help on part D

Please explain what formula you are using and the variables in that formula

In a class of 125 students, 29 are computer science majors, 50 are mechanical engineering majors, 11 are civil engineers and the rest are general engineering majors. Assume students only have one major. If a student is chosen at random what is the probability they are: Round your answers to 3 decimal places. a civil engineering major? 0,088 0.088 a dlvil engineering major or mechanical engineering ma04880.488 a general engineering major? 0.29 0.28 not a computer science major? 0.7680.768 Suppose six students from the class are chosen at random what is the probability none are mechanical engineering majors? 0.0740.043

Explanation / Answer

Probability that a student is not from mechanical engineering major

= ( Total number of people who are not from mechanical engineering major ) / Total number of students

= ( 125 - 50 ) / 125

= 0.6

Therefore out of the selected 6 students, probability that none are mechanical engineering majors is computed as:

= 0.6*0.6*........... 6 times

= 0.66

= 0.047

Therefore 0.047 is the required probability here.

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