Based on historical data, your manager believes that 39% of the company's orders come from first-time customers. A random sample of 171 orders will be used to estimate the proportion of first-time-customers. What is the probability that the sample proportion is between 0.21 and 0.32

And we can find the probability with this difference:

Step-by-step explanation:

For this case we have the following info given:

represent the sample size

the proportion of interest

We want to find the following probability:

We can use the normal approximation for this case since np >10 and n (1-p) >10

For this case we know that the distribution for the sample proportion is given by:

And we can use the following parameters:

And we can apply the z score formula given by:

And using this formula we got:

And we can find the probability with this difference:

y = 3x+4

step-by-step explanation:

to find the slope

slope = (y2-y1)/ (x2-x1)

    = (-8-4)/ (-4-0)

    = -12/-4

  = 3

using the slope intercept form of a line

y= mx+b

we know the slope is 3

we know the y intercept is 4 ( the point where it crosses the y axis or x=0)

y = 3x+4

answer is because 4×10=40

and 98×4= is 392

40,392