Answer:
Yes, there is evidence that there exists a difference in the true mean breaking strengths for the two types of welds. This is because confidence interval does not contain 0
Step-by-step explanation:
Given that in an inertia welding experiment, a sample of 50 welds made with a standard welding method were tested.
Group Group One Group Two
Mean 94.000 96.000
SD 3.000 3.500
SEM 0.424 0.452
N 50 60
The mean of Group One minus Group Two equals -2.000
standard error of difference = 0.629
t = 3.1818
df = 108
a) 95% confidence interval of this difference: From -3.246 to -0.754
b) Yes, there is evidence that there exists a difference in the true mean breaking strengths for the two types of welds. This is because confidence interval does not contain 0
Answer: No
Step-by-step explanation: The length isn't 90 degree's so it can't be a right triangle
Answer:
12x - 6
Step-by-step explanation:
multiply each expression in the parenthesis by 3
3(4x-2) = 12x - 6
Answer:
Hi, There! my Name is jay and I'm here to help!
<h2>Question</h2>
Which graph best represents the number of hours Casey worked each week
<h2>Answer</h2>
(Option A . . .)
Step-by-step explanation:
According to the Question it says "Casey worked no more than 40 hours each week"
So we are looking for a graph that goes no more than 40 hours and the best choice would be option A
Hope this helps!
Take Care!
11.00*9.5=104.5
104.5*0.07=7.315
7.315+104.5=111.815