What is the base area of Box 3?
2 answers:
Answer:
Step-by-step explanation:
Usually, you'd not include the "1" before <em>x</em>, but Edge has no brains and can't comprehend it not being there for some reason.
So 1 and 4.
<u>The answer to the next question on the same page as the one I just answered:</u>
<u>What is the volume of Box 3? </u>
B. x^4 + 4x^3 + x^2 + 4x
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Answer:
21
Step-by-step explanation:
Using<em> Simple Random Sampling</em>, we can estimate the sample size by the formula
where
n = sample size
Z = the z-score corresponding to the confidence level 99.5%
S = the assumed standard deviation = 3 seconds
e = margin of error = 2 seconds
<em>It is worth noticing that the higher the confidence level, the larger the sample should be. </em>
The z-score corresponding to a confidence level of 99.5% can be obtained either with a table or the computer and equals
Z = 3.023
Replacing the values in our formula
So the size of the sample should be at least 21.