Mathematics, 30.11.2020 20:10 starbae1084
BRAINLIEST (15 pts)
The 400-meter race times at a state track meet are normally distributed with a mean of 52.71 seconds and a standard deviation of 3.8 seconds. Using the Standard Normal Probabilities table, what is the approximate probability that a runner chasen at random will have a 400-meter time less than 53.4 seconds?
a. 0.8186
b. 0.2451
c. 0.4286
d. 0.5714
e. 0.7549
Answers: 2
![x^{2} \int\limits^a_b {x} \, dx \lim_{n \to \infty} a_n \left[\begin{array}{ccc}1&2&3\\4&5&6\\7&8&9\end{array}\right] \pi \sqrt[n]{x} \lim_{n \to \infty} a_n \lim_{n \to \infty} a_n \int\limits^a_b {x} \, dx](/tpl/images/0934/4902/cbc1c.png)
Step-by-step explanation:![\int\limits^a_b {x} \, dx \left \{ {{y=2} \atop {x=2}} \right. x^{2} \sqrt{x} \sqrt[n]{x} \neq \pi](/tpl/images/0934/4902/6b6f2.png)
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BRAINLIEST (15 pts)
The 400-meter race times at a state track meet are normally distributed with a...
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