Consider the point where the hexagons meet the positive half of the y axis.
The inner hexagon meets the axis at , whereas the outer hexagon meets the axis at
So, we're looking for a dilation constant such that
So, solving by k we have
Which of the following is true if YW is an angle bisector.
2 answers:
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Answer:
• let's first get the percentage decrease:
• then multiply the percentage decrease with the mass given:
Answer:
Sample mean from population A has probably more accurate estimate of its population mean than the sample mean from population B.
Step-by-step explanation:
To yield a more accurate estimate of the population mean, margin of error should be minimized.
margin of error (ME) of the mean can be calculated using the formula
ME= where
- z is the corresponding statistic in the given confidence level(z-score or t-score)
- s is the standard deviation of the sample (or of the population if it is known)
- N is the sample size
for a given confidence level, and the same standard deviation, as the sample size increases, margin of error decreases.
Thus, random sample of 50 people from population A, has smaller margin of error than the sample of 20 people from population B.
Therefore, sample mean from population A has probably more accurate estimate of its population mean than the sample mean from population B.