The amount of time Americans spend in front of a screen has a mean of 11...

The amount of time Americans spend in front of a screen has a mean of 11 hours with a standard deviation of 2.7 hours. What is the probability that a random chosen American spends more than 12 hours in front of a screen? Represent the probability with a graph.

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Expert Solution

Let us assume that distribution is normal

We need to find

As distribution is normal we can convert x to z

orchestra answered 1 year ago

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