The range rule of thumb is that the range is four times the standard deviation. The range in this case is 922 cubic cm to 1496 cubic cm, i.e., 574 cubic cm.
Therefore, according to the rule, the standard deviation is 574 cubic cm/4 =
143.5 cubic cm. The actual standard deviation is 161.7 cubic cm. The difference is 161.7 - 143.5 = 18.2. Since this is greater than 15 cubic cm, the rule in this case is not accurate.
Answer:
x = 19.5 or 19 1/2
Step-by-step explanation:
cos 41 = 14.7/x
x = 19.5
You just have to divide the bigger x value by the smaller x value
-8.4/-2=4.2
Answer:
52% or 13/25 as a fraction
Step-by-step explanation:
If you get 48%, you will need 52% more to reach 100%. 52/100 can be simplified to 13/25
