Answer:
69x420=28,980
Step-by-step explanation:
i will
Answer:
10
Step-by-step explanation:
5 - 5 = 0 You would want to subtract five from zero giving you -5.
Answer:
the answer is s=5/4 minus 1/16
hope this helps :D
To answer (a), we will need to find the Z value for 710 hours and 990 hours.
![\begin{gathered} For\text{ 710} \\ Z\text{ = }\frac{x-\mu}{\sigma} \\ \text{ = }\frac{710-850}{70} \\ \text{ = -2} \\ p\text{ =0.0228 } \\ For\text{ 990:} \\ Z\text{ = }\frac{990-850}{70} \\ \text{ =2} \\ p\text{ = 0.9772} \end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7D%20For%5Ctext%7B%20710%7D%20%5C%5C%20Z%5Ctext%7B%20%3D%20%7D%5Cfrac%7Bx-%5Cmu%7D%7B%5Csigma%7D%20%5C%5C%20%5Ctext%7B%20%20%20%20%3D%20%7D%5Cfrac%7B710-850%7D%7B70%7D%20%5C%5C%20%5Ctext%7B%20%20%20%20%3D%20-2%7D%20%5C%5C%20p%5Ctext%7B%20%3D0.0228%20%7D%20%5C%5C%20For%5Ctext%7B%20990%3A%7D%20%5C%5C%20Z%5Ctext%7B%20%3D%20%7D%5Cfrac%7B990-850%7D%7B70%7D%20%5C%5C%20%5Ctext%7B%20%3D2%7D%20%5C%5C%20p%5Ctext%7B%20%3D%200.9772%7D%20%5Cend%7Bgathered%7D)
![\begin{gathered} To\text{ find P \lparen–2 \le Z \le 2\rparen} \\ =\text{ 0.9772 -0.0228} \\ =\text{ 0.9544} \\ =95.44\% \end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7D%20To%5Ctext%7B%20find%20P%20%5Clparen%E2%80%932%20%5Cle%20Z%20%5Cle%202%5Crparen%7D%20%5C%5C%20%3D%5Ctext%7B%200.9772%20-0.0228%7D%20%5C%5C%20%3D%5Ctext%7B%200.9544%7D%20%5C%5C%20%3D95.44%5C%25%20%5Cend%7Bgathered%7D)
B) 68% of data lies between one standard deviation of the mean.
850 +70 = 920
850 - 70 = 780