What is the measure of

Mathematics

1 answer:

Liula [17]2 years ago

5 0

The angle of NPR is 130°

First, set up an equation to find x.

$(3x-10)+2x+65=180$

Then, solve the equation for x.

$x=25$

Then, substitute 25 in for x in 2x

Finally, subtract 50 from 180 to find the angle of NPR

130°

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The distribution of the average amount of sleep per night gotten by college students is roughly bell-shaped with mean 412 minute

kirza4 [7]

Answer:

$P(X$

$P(z$

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".

Solution to the problem

Let X the random variable that represent the scores of a population, and for this case we know the distribution for X is given by:

$X \sim N(412,68)$