Answer:
On a coordinate plane, a triangle has points (negative 4, 3), (1, negative 2), (5, 3).
Step-by-step explanation:
This coordinate above gives us the best range of values
If half the girls wear glasses, then 8/2 or 4 girls wear glasses.
The whole class is 8+6 or 14 kids.
The probability is the number of girls wearing glasses over the total people in the whole class.
Number of girls wearing glasses/ T<span>otal people in class
</span>
4/14
Simplify= 2/7
Hope this helps :)
Answer:
a) n = 100
![\bar{x} = 58](https://tex.z-dn.net/?f=%5Cbar%7Bx%7D%20%3D%2058)
s = 8
Confidence interval = 95%
Z at 95% = 1.96
Confidence interval formula :
to ![\bar{x}-z\frac{s}{\sqrt{n}}](https://tex.z-dn.net/?f=%5Cbar%7Bx%7D-z%5Cfrac%7Bs%7D%7B%5Csqrt%7Bn%7D%7D)
Substitute the values :
Confidence interval :
to ![58+1.96 \times \frac{8}{\sqrt{100}}](https://tex.z-dn.net/?f=58%2B1.96%20%5Ctimes%20%5Cfrac%7B8%7D%7B%5Csqrt%7B100%7D%7D)
Confidence interval :
to ![59.568](https://tex.z-dn.net/?f=59.568)
b)n = 200
![\bar{x} = 62](https://tex.z-dn.net/?f=%5Cbar%7Bx%7D%20%3D%2062)
s =11
Confidence interval = 90%
Z at 90% = 1.64
Confidence interval formula :
to ![\bar{x}-z\frac{s}{\sqrt{n}}](https://tex.z-dn.net/?f=%5Cbar%7Bx%7D-z%5Cfrac%7Bs%7D%7B%5Csqrt%7Bn%7D%7D)
Substitute the values :
Confidence interval :
to
Confidence interval :
to ![63.275](https://tex.z-dn.net/?f=63.275)
Answer:
4/7
Step-by-step explanation:
They can be simplified by 3 12 divided by 3 is 4 and 21 divided by 3 is 7 so it's 4/7.
Answer:
volume of box(v)=l×b×h
=1×6×4
=24ft^3
so it required 24volume sand to fill the box