working adults aged 40-70 to determine their level of educati ts were as fol 9)

Question

working adults aged 40-70 to determine their level of educati ts were as fol 9) A poll was taken of 14,356 9) Education Level Male Female Total High School or Less 3396 2340 5736 Bachelor's Degree 3466 4026 7492 Master's Degree 522 478 1000 72 7456 128 56 6900 14,356 Ph.D. Total A person is selected at random. Compute the probability that the person has a master's de A) 0.036 B) 0.070 C) 0.033 D) 0.035 10) Given the following Venn diagram, which of the following equations could be used to 10) calculate the probability of either event A, event B, or event C occurring PB)P(C) A) PlA or B or C)-PA)+ P(B)+ P(C) + PA and B) + P(A and C) + P(B and C) - P(A and B and C) B) PA or B or C) P(A)+P(B)+ P(C) C) P(A or B or C)- P(A)+ P(B)+ P(C) - P(A and B) -P(B and C) D) PA or B or C)=P(A) + P(B) + P(C) - P(A and B and C) 11) Let A, B and C be independent events with P(A)-0.1, P(B)-0.7, and P(C)-0.9. Find 11) P(A and B and C). A) 0.063 B) 0.037 C) 0.078 D) 0.07

Explanation / Answer

Ans:

9)Probability that aperson has master degree=1000/14356=0.070

Option B is correct.(0.070)

10)P(A or B or C)=P(A)+P(B)+P(C)+P(A and B)+P(A and C)+P(B and C)-P(A and B and C)

Option A is correct.

11)As,A,B and C are independent events,so,

P(A and B and C)=P(A)*P(B)*P(C)=0.1*0.7*0.9=0.063

Option A is correct(0.063)

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