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Subtract sides 2x
Divide sides by 3
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CHECK :
So the value is correct.
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Answer:
it is .42 how I know is because I looked at the graph
Step-by-step explanation:
first I look at the school side
next I look at the car and get rid of it because it says middle school
then I get rid of bus and other
Answer:
3 divided by 10
Step-by-step explanation:
Answer:
-1.683
Step-by-step explanation:
Given :
Group 1 :
x1 = 667 ; n1 = 10 ; s1 = 20
Group 2 :
x2 = 679 ; n2 = 14 ; s2 = 15
The test statistic assuming equal variance :
x1 - x2 / √[Sp² * (1/n1 + 1/n2)]
sp² = [(n1 - 1)*s1² + (n2 - 1)*s2²] ÷ (n1 + n2 - 2)
Sp² = [(10 - 1)*20² + (14 - 1)*15²] = 296.59
Test statistic =
(667 - 679)/ √[296.59 * (1/10 + 1/14)]
-12 / 7.1304978
Test statistic = - 1.682
Answer:
first of all, this person is a hacker, their malicious files will destroy your computer
Step-by-step explanation:
B is the answer I think
