Answer:
7 - n
Step-by-step explanation:
Answer:
C. We want to determine if there is significant evidence that the mean strength of welds exceeds 100 lb/in2. The current hypotheses correctly place the burden of proof on those who wish to assert that the specification is satisfied.
Step-by-step explanation:
Given
Required
State why it is preferred to
From the question, we understand that the initial test is the force required to break the weld.
This represents the null hypothesis
Because the required force can not be less than the strength of the weld (it must match the force keeping the weld), the null hypothesis is represented as:
Reading the question further;
The specification requires that the mean strength should exceed 100
In inequalities, exceeds means greater than, and it is represented with >
So, the null hypothesis is rightly represented as:
Hence: (c) is true
Answer:
sin(-π/6) = -1/2
Step-by-step explanation:
sin(π/6) = 1/2 is a value we have memorized.
sin(-π/6) = -sin(π/6) = -1/2
Answer:
well u should go to sleep and get u some rest
<u>answer:</u>
<u>work:</u>
| distribute into the parentheses
| cancel out the + 4 and -4 because they equal to 0
| divide by
| final answer
hope this helps! correct me if anything is wrong ❤ from peachimin