Answer:
The sample size is 
Step-by-step explanation:
From the question we are told that
The margin of error is E = 0.03
The sample proportion is 
From the question we are told the confidence level is 95% , 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
![n = [\frac{Z_{\frac{\alpha }{2} }}{E} ]^2 * \^ p (1 - \^ p )](https://tex.z-dn.net/?f=n%20%3D%20%5B%5Cfrac%7BZ_%7B%5Cfrac%7B%5Calpha%20%7D%7B2%7D%20%7D%7D%7BE%7D%20%5D%5E2%20%2A%20%5C%5E%20p%20%281%20-%20%5C%5E%20p%20%29%20)
=> ![n = [\frac{1.96}{0.03} ]^2 *0.12 (1 - 0.12 )](https://tex.z-dn.net/?f=n%20%3D%20%5B%5Cfrac%7B1.96%7D%7B0.03%7D%20%5D%5E2%20%2A0.12%20%281%20-%200.12%20%29%20)
=>
Answer:
4/9
Step-by-step explanation:
If you add the ratios, it gives you the total, so 4 + 5 = 9. 9 total students. Since boys is represented by 4, then 4/9 is the fraction for boys and 5/9 is the fraction for girls.
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Answer:
3
Step-by-step explanation:
First you gotta take the equation and bring it to the following form:
The slope of the line is the coefficient of x, a.
In other words:
So, as we can see, the number infront of x is 3. That is to say that the slope of this line is equal to 3.
