[67.9 %, 82.1 %] is the 95% confidence interval for the proportion of test-takers answering the question correctly. So we have [67.9 %, 82.1 %] In a random sample of 144 test-takers with 75% answered the question correctly. So the answer in this question is [67.9 %, 82.1 %].
Answer:
i tnink it’s 144
DO NOT FORGET STAY SAFE AT HOME
1: Bettina's 60, and Melvina's 20.
2: 4.5 gallons
Answer:
solution
is
you minus smallest x(you minus because the opposite of positive ia negative)
so you do x-x=0 and 4-x=3
so 2y/2. and 3÷2
so x is 1.5
for the 2nd question 3x -2y= -12
you do add 2y on both sides
so -2y+2y =0 and -12 +2y= -10 y
so 3x/3 and -10y /3
x= - 3.3333333333
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