exam Maths Puzzle Numerical Ability

A data set of size 19 has a correlation coefficient of r = -0.432. Test the significance of r at the 5% level and at the 1% level.
.
.
I am so confused. Please help,

Ellen

Read Solution (Total 0)

exam Other Question

Our teacher wanted us to graph this equation: y= -3/4x+3
And she wanted us to use a "T-Chart" and I know what that is, but the fraction gets me confused. This problem was from our daily warm-up not from any textbook. A triangle has sides 3x +7, 4x -9, and 5x +6. Find the expression the represent its perimeter.