2 years ago

How do i ask a question in hot questions?

1 answer:

4 0

Hello!

You can't make one of your questions a "Hot Question"

I Think that the Moderators are the Ones who pick a certain question from certain subjects depending on what they're about.

So yeah, the only thing you can do is post a question and hopefully, leave it in the hands of the Moderators to do the work.

Hope this Helps! :)

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The life span of a battery is the amount of time the battery will last. The distribution of life span for a certain type of batt

slavikrds [6]

Answer:

0.0548

Step-by-step explanation:

The distribution of life span for a certain type of battery is approximately normal with mean 2.5 hours and standard deviation 0.25 hour.

To find the the probability that a selected battery will have a life span of at most 2.1 hours, we need to first determine the z-score for x=2.1 hours using

$z = \frac{x - \mu}{ \sigma}$