The goal of this week's homework is for you to manually determine if a difference of 1.5 between the petal lengths of setosa and versicolor is statistically significant at 95% confidence. for this you need to define ha as the difference between the mean of the petal length of the versicolor and the one of setosa. you need to also define h0 as 1.5.

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: 0

step-by-step explanation: the positive, like 5, + its opposite, like -5 would be 0

5+(-5)=0, or 5-5=0