A tyre manufacturing company kept a record of the distance covered before a tyre needed to be replaced .The table shows the result of 1200 cases . Distance (in km) Less than 4000 4000 to 7000 7000 to 9000 9000 to 14000 More than 14000 Frequency 20 210 325 200 445 Answer the following questions which are based on above data 46 If someone buys a tyre of this company , then what is the probability that it will need to be replaced before it has covered 4000 km. (a) 0.016 (b) 0.002 (c) 0.12 (d) 0.2 47 If someone buys a tyre of this company , then what is the probability that it will need to be replaced between 4000 km to 7000 km ? (a)0.17 (b) 0.16 (c) 0.15 (d) 0.14 48 If someone buys a tyre of this company , then what is the probability that it will need to be replaced between 7000 km to 9000 km. (a)0.23 (b) 0.25 (c) 0.27 (d) 0.29 49 If someone buys a tyre of this company, then what is the probability that it will need to be replaced more than 9000 km. (a)0.33 (b) 0.43 (c) 0.53 (d) 0.63 50 If someone buys a tyre of this company, then what is the probability that it will need to be replaced more than 14000 km. (a)0.27 (b) 0.37 (c) 0.47 (d) 0.57
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