Answer:
41.25
Step-by-step explanation:
0.70 + 1 (40.55) = 41.25
Answer:
(b) 0.251
Step-by-step explanation:
1. Standard deviation equation:
![SD=\sqrt{\frac{\sum\limits^N_i {(x_{i}-X)^{2} } }{N} }](https://tex.z-dn.net/?f=SD%3D%5Csqrt%7B%5Cfrac%7B%5Csum%5Climits%5EN_i%20%7B%28x_%7Bi%7D-X%29%5E%7B2%7D%20%20%7D%20%7D%7BN%7D%20%7D)
Where X is the mean of the data, and N the amount of data. Then, N=5
2. Estimate the Mean:
![X=\frac{0.750+0.750+0.200+0.600+0.200}{5}=\frac{2.5}{5}=0.5\\](https://tex.z-dn.net/?f=X%3D%5Cfrac%7B0.750%2B0.750%2B0.200%2B0.600%2B0.200%7D%7B5%7D%3D%5Cfrac%7B2.5%7D%7B5%7D%3D0.5%5C%5C)
3. Caclulate Standard deviation:
![SD=\sqrt{\frac{{(0.750-0.500)^{2}+(0.750-0.500)^{2}+(0.200-0.500)^{2}+(0.600-0.500)^{2}+(0.200-0.500)^{2} } }{5} }](https://tex.z-dn.net/?f=SD%3D%5Csqrt%7B%5Cfrac%7B%7B%280.750-0.500%29%5E%7B2%7D%2B%280.750-0.500%29%5E%7B2%7D%2B%280.200-0.500%29%5E%7B2%7D%2B%280.600-0.500%29%5E%7B2%7D%2B%280.200-0.500%29%5E%7B2%7D%20%20%7D%20%7D%7B5%7D%20%7D)
![SD=\sqrt{\frac{0.315}{5} }=\sqrt{0.063}\\SD=0.251](https://tex.z-dn.net/?f=SD%3D%5Csqrt%7B%5Cfrac%7B0.315%7D%7B5%7D%20%7D%3D%5Csqrt%7B0.063%7D%5C%5CSD%3D0.251)
Answer:
20
Step-by-step explanation:
$579/$28 = 20.67
it says about because this is a decimal and there's only whole numbers so it's 20 payments
1. ...30, 36
2. ...17, 21
3. ...12, 9
4. ...25, 30
hope this helps! have a good day