3 years ago

Find the coordinates of letter c.

Mathematics

1 answer:

Alika [10]3 years ago

7 0

Answer:mmmmmmmso;/mvsklllllllllllllllnvslxlnxnmlkx.vmkmd

Step-by-step explanation:nmkl iscvcjniknikosvnjivmvms cfdujnncsbnosnojsvnoj dvjnsvnjvnklvsnkl

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matrenka [14]

To answer (a), we will need to find the Z value for 710 hours and 990 hours.

$\begin{gathered} For\text{ 710} \\ Z\text{ = }\frac{x-\mu}{\sigma} \\ \text{ = }\frac{710-850}{70} \\ \text{ = -2} \\ p\text{ =0.0228 } \\ For\text{ 990:} \\ Z\text{ = }\frac{990-850}{70} \\ \text{ =2} \\ p\text{ = 0.9772} \end{gathered}$ $\begin{gathered} To\text{ find P \lparen–2 \le Z \le 2\rparen} \\ =\text{ 0.9772 -0.0228} \\ =\text{ 0.9544} \\ =95.44\% \end{gathered}$

B) 68% of data lies between one standard deviation of the mean.

850 +70 = 920

850 - 70 = 780

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professor190 [17]

Answer:

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