The equation is 2(n)-4=18.
The correct answer is (20,-50)
90
Step-by-step explanation:vkjl
Answer:
bbb
Step-by-step explanation:
answers is b
sorry if wroNg ┐( ∵ )┌
The usual margin of error we strive for is a 95% probability that our estimate is within the margin. Assuming a normal distribution (and that we have a big enough sample not to worry about t tests) that corresponds to between minus and plus two standard deviations of the mean (remember the 68-95-99.7 rule). So our margin of error is plus or minus two standard deviations.
Answer: ±2%
