Answer:
hii
Step-by-step explanation:
Surface area = 2(lw) + 2(wh) + 2(lh)
2(4 * 5) + 2(5 * 15) + 2(4 * 15)
2(20) + 2(75) + 2(60)
40 + 150 + 120
310 square inches
Answer:
Step-by-step explanation:
Information given
represent the sample mean for the content of active ingredient
represent the sample standard deviation for the sample
sample size
represent the value that we want to test
t would represent the statistic
represent the p value for the test
System of hypothesis
We need to conduct a hypothesis in order to check if the true mean for the active agent is at least 20 mg, the system of hypothesis would be:
Null hypothesis:
Alternative hypothesis:
The statistic would be:
(1)
Now we can calculate the statistic:
P value
The degrees of freedom are calculated like this:
Since is a one left tailed test the p value would be:
<span>So we want to know which of theese products are negative. We have three rules: -1*(+1)=-1 and -1*(-1)=+1 and +1*(+1)=+1 Lets calculate and check: A. is negative, B. is negative, C. is positive and D.positive. So Aand B are negative and that is the correct answer.</span>