1716 3ps 1116 A) Yes B) No 12. One card is selected from a deck of cards. Find t

Question

1716 3ps 1116 A) Yes B) No 12. One card is selected from a deck of cards. Find the probability of selecting a red card or a heart. b) D) 13. If a single fair die is rolled, find the probability of a 5 given that the number rolled is odd B) C) 14. of the coffee makers sold in an appliance store, 4.0% have either a faulty switch or a defective cord 26% have a faulty switch, and 0.6have both defects. What is the probability that a coff maker will have a defective cord? Express the answer as a percentage. A) 2% B) 4.6% C) 3.2% D) 4.0% , A survey of senior citizens at a doctor's office shows that 49% take blood pressure-loven medication, 42% take cholesterol-lowering medication, and 9% take both medications. W probability that a senior citizen takes either blood pressure-lowering or cholesterol-lowe medication? Express the answer as a percentage A) 16% B) 0% C)82% D) 100%

Explanation / Answer

(12) one card is selected from adeck of cards find the probability of selecting a red card or a heart

Sol:    A red card is 1 out of 2
          A heart is 1 out of 4
       since the heart is a red card=1/2

the probability of selecting a red card or a heart is 1/2 (option A is correct)

(13) if a single fair die is rolled find the probability of a 5 given that the number rolled is odd

Ans:its odd there are only 3 possible choices(1,3,5)
only one of those choice is 5
therefore the probability of a 5 given that the number rolled is odd is 1/3(option A is correct)

(14) of the coffee makers sold in an appliance store 4.0% have either a faulty switch or a defective cord 2.6% have a faulty switch,and 0.6% have both defects what is the probability that a coffee maker will have a defective cord?
Sol: P(fs)=0.026
    P(fs OR dc)=0.04
      P(fs AND dc)=0.006
    P(fs OR dc)=P(fs)+P(dc)-P(fs AND dc)
               0.04=0.026+P(dc)-0.006
              P(dc)=0.04-0.02
   P(dc)=0.02
                P(dc)=2%
the probability that a coffee maker will have a defective cord is 2% ( option A is correct)

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