17x25i don't know how to do this
2 answers:
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Ok... so this question can be solved by using simultaneous equations.
Use the general from of a parabola
you know the value of c, the y-intercept... y = -4
which means the equation is
now use the other 2 points to get 2 equations in 2 unknowns
(-2, -20) just substitute
this becomes
now the other equation using (4, -20)
The simplified form is
Use the general from of a parabola
you know the value of c, the y-intercept... y = -4
which means the equation is
now use the other 2 points to get 2 equations in 2 unknowns
(-2, -20) just substitute
this becomes
now the other equation using (4, -20)
The simplified form is
Answer:
So the value of the test statistic is -0.85.
Step-by-step explanation:
We know that a sample of 1800 computer chips revealed that 53% of the chips do not fail in the first 1000 hours of their use. The company's promotional literature states that 54% of the chips do not fail in the first 1000 hours of their use.
We get that:
We calculate the standar deviation:
We calculate the value of the test statistic:
So the value of the test statistic is -0.85.