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VikaD [51]
4 years ago
11

The average American adult has completed an average of 11.25 years of education with a standard deviation of 1.75 years. A rando

m sample of 75 adults is taken. a) What is the probability that the sample will have a mean more than 11.5? b) What is the probability that the sample will have a mean between 11 and 12 years?
Mathematics
1 answer:
alexgriva [62]4 years ago
4 0
A is .088 but im trying to find b too!
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Ethan bought 3 pints of raspberries for $5 per pint and x pints of blueberries for $3 per pint. The average
bagirrra123 [75]

The y-intercept represents the average cost, in dollars per pint, of all the raspberries Ethan bought. Therefore, option B is the correct answer.

Given that, Ethan bought 3 pints of raspberries for $5 per pint and x pints of blueberries for $3 per pint.

The average is (15 + 3x)/(3+x) per pint.

We need to find what quantity will be represented by the y-intercept of the graph.

<h3>How to find the y-intercept of the graph?</h3>

Since the y-intercept always has a corresponding x-value of 0, replace x with 0 in the equation and solve for y. On a graph, the y-intercept can be found by finding the value of y when x=0. This is the point at which the graph crosses through the y-axis.

Now, the graph of y=(15 + 3x)/(3+x)is given below.

To find the x-intercept, substitute in 0 for y and solve for x. To find the y-intercept, substitute in 0 for x and solve for y.

x-intercept(s): (−5,0)

y-intercept(s): (0,5)

So, the y-intercept represents the average cost, in dollars per pint, of all the raspberries Ethan bought.

Therefore, option B is the correct answer.

To learn more about y-intercept visit:

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Please help its urgent due in an hour
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use geogebra app you can install it on your pc if you don't know how to use it search it on yt

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