Answer:
$2.85 per hour
Step-by-step explanation:
Answer:
Mass of bread crumb is 20 times the mass of the ant..
Step-by-step explanation:
Mass of an ant =
kg
Ant carries a weight of bread crumb to its anthill.
Mass of the bread crumb =
kg
Ratio of their masses,
![\frac{\text{Mass of the ant}}{\text{Mass of bread crumb}}=\frac{4\times 10^{-6}}{8\times 10^{-5}}](https://tex.z-dn.net/?f=%5Cfrac%7B%5Ctext%7BMass%20of%20the%20ant%7D%7D%7B%5Ctext%7BMass%20of%20bread%20crumb%7D%7D%3D%5Cfrac%7B4%5Ctimes%2010%5E%7B-6%7D%7D%7B8%5Ctimes%2010%5E%7B-5%7D%7D)
![\frac{\text{Mass of the ant}}{\text{Mass of bread crumb}}=\frac{1}{2\times 10^{(-5+6)}}](https://tex.z-dn.net/?f=%5Cfrac%7B%5Ctext%7BMass%20of%20the%20ant%7D%7D%7B%5Ctext%7BMass%20of%20bread%20crumb%7D%7D%3D%5Cfrac%7B1%7D%7B2%5Ctimes%2010%5E%7B%28-5%2B6%29%7D%7D)
![\frac{\text{Mass of the ant}}{\text{Mass of bread crumb}}=\frac{1}{20}](https://tex.z-dn.net/?f=%5Cfrac%7B%5Ctext%7BMass%20of%20the%20ant%7D%7D%7B%5Ctext%7BMass%20of%20bread%20crumb%7D%7D%3D%5Cfrac%7B1%7D%7B20%7D)
Mass of the bread crumb = 20×(Mass of the ant)
Therefore, mass of the bread crumb is 20 times the mass of the ant.
Complete Question
A survey is planned to estimate the proportion of voters who support a proposed gun control law. The estimate should be within a margin of error of ±5% with 90% confidence, and we do not have any prior knowledge about the proportion who might support the law. How many people need to be included in the sample?
Round your answer up to the nearest integer.
sample size = _____
Answer:
The sample size is
Step-by-step explanation:
From the question we are told that
The margin of error is E = 5% = 0.05
Generally given that there was no prior knowledge about the proportion of who might support the law, we will assume the sample proportion to be
![\^ p = 0.5](https://tex.z-dn.net/?f=%5C%5E%20p%20%3D%20%200.5)
From the question we are told the confidence level is 90% , hence the level of significance is
=>
Generally from the normal distribution table the critical value of
is
Generally the sample size is mathematically represented as
=>
=>
Well 49x49= 2,401 so not really