need answer all the parts, incomplete answer will get down vote e: If 2u= 5x, is the relation beween two variables u and x, and harmonic mean of x is 0-4, find the harmonic mean of u? 4: Find: i) Inter-quartile Range (ii) Quartile Deviation (iii) Coefficient of Quartile Deviation. for the following distribution: Class Interval : 0-15 , 15-30 , 30-45 , 45-60 , 45- 60 , 60- 75 , 75 90, 90-105 f: 8, 26,30,45,20,17,4 f: If the geometric mean of two observations is (1/n) times their harmonic mean, prove that the rate of the two observations is: ( 1+✓1n²) : ( 1. ✓1- n²)? g: " n persons are seated on n chairs at a round table. Find the probability that two specified

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I need answer all the parts, incomplete answer will get down vote e: If 2u= 5x, is the relation beween two variables u and x, and harmonic mean of x is 0-4, find the harmonic mean of u? 4: Find: i) Inter-quartile Range (ii) Quartile Deviation (iii) Coefficient of Quartile Deviation. for the following distribution: Class Interval : 0-15 , 15-30 , 30-45 , 45-60 , 45- 60 , 60- 75 , 75 90, 90-105 f: 8, 26,30,45,20,17,4 f: If the geometric mean of two observations is (1/n) times their harmonic mean, prove that the rate of the two observations is: ( 1+✓1n²) : ( 1. ✓1- n²)? g: " n persons are seated on n chairs at a round table. Find the probability that two specified persons are sitting next to each other.
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