Suppose the line of the best fit is being found for some data points that have an r-value of 0.885. if the mean of the x-coordinates is 5,768, and the mean of the y-coordinates is 8.112, what is the slope of the line to three decimal place.
a)1.245< < < < nvm thats the correct answer
b)0.803
c)0.629
d)1.589

a)1.245

Step-by-step explanation:

There is a mistake in the question, the corrected version is:

"the standard deviation of the x-coordinates is 5.768 and the standard deviation of the y-coordinates is 8.112"

The equation of a line, in general terms, is:

y = a + b*x

where b is its slope and a is its y-intercept.

In a regression, the slope can be computed as follows:

b = r * standard deviation of the y-coordinates / standard deviation of the x-coordinates = 0.885*8.112/5.768 = 1.245

good luck on your studies! : )

david edward.

134.6 us dollars

step-by-step explanation:

1 us dollar = 1.33 canadian dollars

so, 150 us dollars = 150 × 1.33 = $199.5.

in canada, the money mitchell spent = 20 canadian dollars.

remaining canadian dollars with him = 199.5 - 20 = 179.5.

after mitchell returned to us, he exchanged the remaining canadian dollars to us dollars.

179.5 canadian dollars = 179.5 × 0.75 = 134.6 us dollars.