If the variance of a random variable x is 17 that what is variance of y=2x+5 ? Option A. 34. B 39. C 68. D. 78

Prachi · 3 Jan 2024

Firstly change variance of x in SDx and put the value of SDx to get the value of SDy and then change SDy in Variance of Y( ans- (SDy)^2= (2√7)^2 =68)

Vedant · 3 Jan 2024

D 2²*17

Sachin · 3 Jan 2024

68 is answer

Kharva · 3 Jan 2024

Variance hai it means square of 2

Kharva · 3 Jan 2024

Y = | 2²(17) |

Namritha · 3 Jan 2024

2*17=34

Kriti · 3 Jan 2024

How ?

Kriti · 3 Jan 2024

But answer 68 hai

Kharva · 3 Jan 2024

68

Ravi · 3 Jan 2024

2×17+5

Alagu · 3 Jan 2024

2×17=34

Ravi · 3 Jan 2024

39

Heerva · 3 Jan 2024

39

Ronak · 3 Jan 2024

34

Dhruvaraj · 3 Jan 2024

34

Sai · 3 Jan 2024

34