Answer:
Step-by-step explanation:
Total voters = 900
Republicians =369
Democrats =468
Independents = 63
Sample size n =90
a) The expected value of the number of Republicans in the sample is
=![\frac{90*369}{900} =36.90](https://tex.z-dn.net/?f=%5Cfrac%7B90%2A369%7D%7B900%7D%20%3D36.90)
b) The chance the sample contains only Republicans and Democrats is
= (no of republicians+democrats)/total people
=![\frac{369+468}{900} =0.93](https://tex.z-dn.net/?f=%5Cfrac%7B369%2B468%7D%7B900%7D%20%3D0.93)
c)
Answer:
b
Step-by-step explanation:
nah that's it foo your screwed
Answer:
1st is 2
2nd is 6
3rd is 14
Step-by-step explanation:
Answer: x=16 kg.
Step-by-step explanation:
![\displaystyle\\x+x+\frac{1}{2}x=40\\\\ 2\frac{1}{2}x=40\\\\\frac{(2*2+1)}{2}x=40\\\\ \frac{5}{2} x=40\\\\Multiply\ both\ sides\ of\ the\ equation\ by\ 2:\\\\\frac{5}{2}x*2 =40*2\\\\5x=80\\\\Divide\ both\ sides\ of\ the\ equation\ by\ 5:\\\\x=16\ kg.](https://tex.z-dn.net/?f=%5Cdisplaystyle%5C%5Cx%2Bx%2B%5Cfrac%7B1%7D%7B2%7Dx%3D40%5C%5C%5C%5C%202%5Cfrac%7B1%7D%7B2%7Dx%3D40%5C%5C%5C%5C%5Cfrac%7B%282%2A2%2B1%29%7D%7B2%7Dx%3D40%5C%5C%5C%5C%20%5Cfrac%7B5%7D%7B2%7D%20%20x%3D40%5C%5C%5C%5CMultiply%5C%20%20both%5C%20%20sides%5C%20%20of%5C%20%20the%5C%20%20equation%5C%20%20by%5C%20%202%3A%5C%5C%5C%5C%5Cfrac%7B5%7D%7B2%7Dx%2A2%20%3D40%2A2%5C%5C%5C%5C5x%3D80%5C%5C%5C%5CDivide%5C%20%20both%5C%20%20sides%5C%20%20of%5C%20%20the%5C%20%20equation%5C%20%20by%5C%20%205%3A%5C%5C%5C%5Cx%3D16%5C%20kg.)
1)Shade 56 of the cubes
2)0.056