<span>Answer:
Margin of Error (half of confidence interval) = 10
The margin of error is defined as the "radius" (or half the width) of a confidence interval for a particular statistic.
Level of Confidence = 95
Ď: population standard deviation = 40
('z critical value') from Look-up Table for 95% = 1.96
The Look-up in the Table for the Standard Normal Distribution utilizes the Table's cummulative 'area' feature. The Table shows positve and negative values of ('z critical') but since the Standard Normal Distribution is symmetric, only the magnitude of ('z critical') is important.</span>
Answer:
1) 20%
2) 30%
3) 50%
Step-by-step explanation:
Answer:
Present-day cells evolved from a common prokaryotic ancestor along three lines of descent, giving rise to archaebacteria, eubacteria, and eukaryotes.
Changed the composition of the oceans. Most of the iron was precipitated out by early life.
Changed the composition of the atmosphere. Oxygen became available in abundance.
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The volume of the can = area x height
2500 = pi*r^2 * 15
r^2 = (2500)/(pi*15)
r = √((2500)/(pi*15))
r = 6.86 cm
<span>the radius of the can is 6.68 cm </span>
