Answer:
23
Step-by-step explanation:
Answer:
D IS THE BEST IS WHAT MY TEACHER TOLD ME
Step-by-step explanation:
The answer is <span>y = x2 − 4
if you try to factor out all of the equations given to you (ex. 0=x2+4x+2), the only equation that can be factored out is </span><span>y = x2 − 4.
</span><span>
y = x2 − 4
</span><span>0= x2 − 4
</span>0=(x-2)(x+2)
0=x-2 0=x+2
2=x x=-2
Answer:
Set of hypothesis.
Step-by-step explanation:
We are given the following in the question:
Population mean, μ = 20.5 oz
Sample mean,
= 20.4 oz
Sample size, n = 50
Population standard deviation, σ = 2.25 oz
First, we design the null and the alternate hypothesis
We use One-tailed z test(left tailed) to perform this hypothesis.
Formula:
Putting all the values, we have
Based on the significance level, we can make our decision and complete the hypothesis testing.
We may accept the null hypothesis or fail to accept depending on different significance level.
Answer:
D
Step-by-step explanation: