Answer:
(0.55, 0.75)
Step-by-step explanation:
The range can be estimated to be 6 standard deviations wide. Therefore, the standard deviation is:
σ = (0.72 - 0.42) / 6
σ = 0.05
The margin of error is ±2σ, so:
ME = ±0.10
Therefore, the interval estimate is:
(0.65 - 0.10, 0.65 + 0.10)
(0.55, 0.75)
Answer:
B
Step-by-step explanation:
3x-7 <-4
Firstly solve this.
+7 +7
3x<3
÷3 ÷3
x<1
And because the inequality symbol isn't "equal to", the circle isn't coloured in.
The line will go from 1 to behind 0
The common factor in both terms is 10<span />
Answer: (2,-3)
Step-by-step explanation: