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Suppose that samples of polythene bags f...

Suppose that samples of polythene bags from two manufacturers, A and B, are tested by a prospective buyer for bursting pressure, with the following results. Bursting Pressure in kg, Number of bags manufactured by manufacturer 5-10, 2, 9 10-15, 9, 11 15-20, 29, 18 20-25, 54, 32 25-30, 11, 27 30-35, 5, 13 Which set of the bags has the highest average brusting pressure?

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RD SHARMA ENGLISH-STATISTICS-All Questions
  1. If for a sample of size 60, we have the following information sumxi^2=...

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  2. The weight of coffee in 70 jars is shown in the following table: Weigh...

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  3. Suppose that samples of polythene bags from two manufacturers, A and B...

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  4. Let x1, x2, ...... ,xn be values taken by a variable Xa n dy1, y2,......

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  5. The sum of the squares of deviation of 10 observations from their mean...

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  6. If the S.D. of a set of observations is 8 and if each observation is ...

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  7. Find the mean and variance of frequency distribution given below: xi :...

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  8. The mean deviation of the series a , a+d , a+2d , , a+2n from its mea...

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  9. The standard deviation of the data: x : , 1, a , a^2 , ..., a^n f: , ...

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  10. The mean deviation of the numbers 3,4,5,6,7 from the mean is(a) 25  ...

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  11. A batsman scores run in 10 innings as 38,70,48,34,42,55,63,46,54 and ...

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  12. The scores of a batsman in 10 matches were as follows: 38,70,48,34,...

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  13. Calculate mean for the following data: xi : 3 9 17 23 27...

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  14. Calculate the mean and standard deviation for the following data: Wage...

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  15. The following table gives the distribution of income of 100 families i...

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  16. While calculating mean and variance of 10 readings, a student wrong...

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  17. Mean  and standard deviation of 100 observations were found to be 4...

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  18. The number of telephone calls received at an exchange in 245 successiv...

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  19. Calculate mean deviation from the median for the following distribu...

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  20. Find the variance and standard deviation for the following data: 4,6,1...

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