Question:

question no 1

Updated On: May 19, 2023

Hide Solution

Verified By Collegedunia

Solution and Explanation

image_resized

Was this answer helpful?

0

1

Top Questions on onlytopic too long for capturing1

This is a test question
- onlysubjectexam - 2023
- onlysubject istoolong for capturing1
- onlytopic too long for capturing1
View Solution
Explanation:

Let two observations are $x_{1}$ and $x_{2}$ mean $= \frac{\sum x_{i}}{5} = 5 \Rightarrow 1 + 3 + 8 + x_{1} + x_{2} = 25$ $\Rightarrow x_{1} + x_{2} = 13$ ....(i)Variance $(σ^{2}) = \frac{\sum x_{i}^{2}}{5} - 25 = 9.20$ $\Rightarrow \sum x_{i}^{2} = 171$ $\Rightarrow x_{1}^{2} + x_{2}^{2} = 97$ .....(ii)by (1) and (2) ${(x_{1} + x_{2})}^{2} - 2 x_{1} x_{2} = 97$ or $x_{1} x_{2} = 36$ $∴ x_{1} : x_{2} = 4 : 9$ Hence, the correct option is (C).
- onlysubjectexam - 2020
- onlysubjectexam - 2021
- onlysubject istoolong for capturing1
- onlytopic too long for capturing1
View Solution
Explanation:

Let two observations are $x_{1}$ and $x_{2}$ mean $= \frac{\sum x_{i}}{5} = 5 \Rightarrow 1 + 3 + 8 + x_{1} + x_{2} = 25$ $\Rightarrow x_{1} + x_{2} = 13$ ....(i)Variance $(σ^{2}) = \frac{\sum x_{i}^{2}}{5} - 25 = 9.20$ $\Rightarrow \sum x_{i}^{2} = 171$ $\Rightarrow x_{1}^{2} + x_{2}^{2} = 97$ .....(ii)by (1) and (2) ${(x_{1} + x_{2})}^{2} - 2 x_{1} x_{2} = 97$ or $x_{1} x_{2} = 36$ $∴ x_{1} : x_{2} = 4 : 9$ Hence, the correct option is (C).
- onlysubject istoolong for capturing1
- onlytopic too long for capturing1
View Solution
valueable
- onlysubject istoolong for capturing1
- onlytopic too long for capturing1
View Solution