Answer:
x=9
Step-by-step explanation:
Answer:
21, 144, 12
Step-by-step explanation:
Given that a sample of 30 distance scores measured in yards has a mean of 7, a variance of 16, and a standard deviation of 4.
Let X be the distance in yard.
i.e. each entry of x is multiplied by 3.
New mean variance std devition would be
E(3x) = 
Var (3x) = 
Std dev (3x) = 
Thus we find mean and std devition get multiplied by 3, variance is multiplied by 9
The answer is 37. 5X5 = 25. 925 divided by 25 is 37
Hope this helps
Answer: 86.36 cm
Step-by-step explanation:
Are of the blue squares are = 34
34 units = 86.36 cm