12. In a bag, there are 100 bulbs out of which 30 are bad ones. A bulb is taken out of the bag at random. The probability of the selected bulb to be good is: (a) 0.50 (b) 0.70 (c) 0.30 (d) None of these timor and 560 times a "head' occurs. The
12. In a bag, there are 100 bulbs out of which 30 are bad ones. A bulb is taken out of the bag at random. The probability of the selected bulb to be good is: (a) 0.50 (b) 0.70 (c) 0.30 (d) None of these timor and 560 times a "head' occurs. The
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 11ECP: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces....
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Transcribed Image Text:12. In a bag, there are 100 bulbs out of which 30 are bad ones. A bulb
is taken out of the bag at random. The probability of the selected
bulb to be good is:
(a) 0.50
(b) 0.70
(c) 0.30
(d) None of these
13. A coin is tossed 1000 times and 560 times a "head' occurs. The
empirical probability of occurrence of a Head in this case is:
(a) 0.50
(b) 0.56
(c) 0.44
(d) 0.056
14. Two coins are tossed 200 times and the following outcomes are
recorded:
HH HT OR TH TT
56
110
34
The empirical probability of occurrence of at least one Head in the
above case is:
(a) 0.33
(b) 0.34
(c) 0.66
(d) 0.83,
15. On a particular day, the number of vehicles passing a crossing is
given here:
Vehicle Two-wheeler Three-wheeler Four-wheeler
Frequency
52
71
What is the probability of a two-wheeler passing the crossing on that
day?
(a) 0.26
(b) 0.71
(c) 0.385
(d) 0.615
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