Distribute to Simplify -3(4x + 9)
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Answer:
The claim that he rate of inaccurate orders is equal to 10% is supported by statistical evidnece at 5% level
Step-by-step explanation:
Given that in a study of the accuracy of fast food drive-through orders, one restaurant had 34 orders that were not accurate among 371 orders observed.
Sample proportion
(Two tailed test at 5% significance level)
p difference =
Std error if H0 is true =
Test statistic Z = p diff/std error
=0.539
p value = 0.5899
Since p > 0.05 accept null hypothesis
The claim that he rate of inaccurate orders is equal to 10% is supported by statistical evidnece at 5% level
We use quadratic formula then
For a expression
- ax²+bx+c=0
The quadratic formula is
If underroot values becomes negative we use iota(i)
which has value=√-1