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In , you were asked to prepare a frequency distribution table regarding the concentration of sulphur dioxide in the air in parts per million of a certain city for 30 day . Using this table , find the probability of the concentration of sulphur dioxide in the interval `0.12 - 0.16` on any of these days .

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A study was conducted to find out the concentration of sulphur dioxide in the air in parts per million (ppm) of a certain city. The data obtained for 30 days is as follows : You were asked to prepare a frequency distribution table, regarding the concentration of sulphur dioxide in the air in parts per million (ppm) of a certain city for 30 days . Using this table, find the probability of the concentration of sulphur dioxide in the interval 0.12-0.16 on any of these days.

In , you were asked to prepare a frequency distribution table regarding the blood groups of 30 students of a class. Use this table to determine the probability that a student of this class, selected at random, has blood group AB.

To find out the concentration of SO_(2) in the air (in parts per million, i.e., ppm), the data was collected for 30 localities in a certain city and is presented below: Find the mean concentration of SO_(2) in the air.

A study was conducted to find out the concentration of sulphur dioxide in the air in parts per million (ppm) of a certain city. The data obtained for 30 days is as follows : {:(0.03,0.08,0.08,0.09,0.04,0.17),(0.16,0.05,0.02,0.06,0.18,0.20),(0.11,0.08,0.12,0.13,0.22,0.07),(0.08,0.01,0.10,0.06,0.09,0.18),(0.11,0.07,0.05,0.07,0.01,0.04):} (ii) For how many days, was the concentration of sulphur dioxide more than 0.11 parts per million ?

A study was conducted to find out the concentration of sulphur dioxide in the air in parts per million (ppm) of a certain city. The data obtained for 30 days is as follows : {:(0.03,0.08,0.08,0.09,0.04,0.17),(0.16,0.05,0.02,0.06,0.18,0.20),(0.11,0.08,0.12,0.13,0.22,0.07),(0.08,0.01,0.10,0.06,0.09,0.18),(0.11,0.07,0.05,0.07,0.01,0.04):} (i) Makes a grouped frequency distribution table for this data with class intervals as 0.00-0.04,0.04-0.08, and so on.

The relative humidity (in %) of a certain City for a September month of 30 days was as follows: (i) Construct a grouped frequency distribution table with classes 84-86, 86,-88 etc. (ii) What is the range of the data?

The distance (in km) of 40 engineers from their residence to their place of work were found as follows : {:(5,3,10,20,25,11,13,7,12,31),(19,10,12,17,18,11,32,17,16,2),(7,9,7,8,3,5,12,15,18,3),(12,14,2,9,6,15,15,7,6,12):} Construct a grouped frequency distribution table with class size for the data given above taking the first interval as 0-5 (5 not included). What main features do you observe from this tabular representation ?

Three coins were tossed 30 times simultaneously. Each time number of heads occurring was note down as follows : 0, 1, 2, 2, 1, 2, 3, 1, 3, 0, 1, 3, 1, 1, 2, 2, 0, 1, 2, 1, 3, 0, 0, 1, 1, 2, 3, 2, 2, 0. Prepare a frequency distribution table for the data given above.

A company manufactures car batteries of a particular type. The lives (in years) of 40 such batteries were recorded as follows : {:(2.6,3.0,3.7,3.2,2.2,4.1,3.5,4.5,3.5,2.3,3.2),(3.4,3.8,3.2,4.6,3.7,2.5,4.4,3.4,3.3,2.9,3.0),(4.3,2.8,3.5,3.2,3.9,3.2,3.2,3.1,3.7,3.4,4.6),(3.8,3.2,2.6,3.5,4.2,2.9,3.6,,,,):} Construct a grouped frequency distribution table for this data, using class intervals of size 0.5 starting form the intervals 2-2.5

The relative humidity (in %) of a certain city for a month of 30 days was as follows : {:(98.1,98.6,99.2,90.3,86.5,95.3,92.9,96.3,94.2,95.1),(89.2,92.3,97.1,93.5,92.7,95.1,97.2,93.3,95.2,97.3),(96.2,92.1,84.9,90.2,95.7,98.3,97.3,96.1,92.1,89):} (i) Construct a grouped frequency distribution table with classes 84-86 ,86-88, etc.

SUBHASH PUBLICATION-PROBABILITY -EXERCISE 15.1
  1. 1500 families with 2 children were selected randomly, and the followin...

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  2. In a particular section of Class IX, 40 students were asked about the ...

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  3. Three coins are tossed simultaneously 200 times with the following fre...

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  4. An organisation selected 2400 families at random and surveyed them to ...

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  5. An organisation selected 2400 families at random and surveyed them to ...

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  6. An organisation selected 2400 families at random and surveyed them to ...

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  7. An organisation selected 2400 families at random and surveyed them to ...

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  8. An organisation selected 2400 families at random and surveyed them to ...

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  9. A teacher analyses the performance of two sections of students in a ma...

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  10. A teacher analyses the performance of two sections of students in a ma...

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  11. To know the opinion of the students about the subject statistics , a s...

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  12. To know the opinion of the students about the subject statistics , a s...

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  13. Distance (in km) of 40 engineers from their place of residence to thei...

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  14. Distance (in km) of 40 engineers from their place of residence to thei...

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  15. Distance (in km) of 40 engineers from their place of residence to thei...

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  16. Activity : Note the frequency of two - wheelers , three - wheelers and...

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  17. Activity : Ask all the students in your class to write a 3 - digit num...

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  18. Eleven bags of wheat flour, each marked 5 kg actually contained the fo...

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  19. In , you were asked to prepare a frequency distribution table regardin...

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  20. In , you were asked to prepare a frequency distribution table regardin...

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