Solution :
It is given that :
(Null hypothesis, is also correct)
(Alternate hypothesis, also called )
This is a lower tailed test,
Therefore,
Sample proportion,
= 0.04
And claimed proportion, P = 0.05
Significance level, = 0.01
Therefore, calculating the statistics, we get
Standard deviation of
Test statistic,
Now since this is a lower tailed test, p-value =
Rejection Criteria : Reject if p-value < α .
Conclusion : Since the p-value , we fail to reject the null hypothesis. There is insufficient evidence that p is less than 0.05
the answer is z=3. hope this helps
i took this exam and the answer is c.25,200
I think it’s D. 102 but it may not be.
The problem gives you X, so replace X witht he given vaule and solve for y:
y = -0.1x^2 + 4X
X = 40
y = -0.1(40)^2 +4(40)
y = -0.1(1600) + 160
y = -160 + 160
y = 0