For a t-curve with d.f.=8, find the two t-values that divided the area under the curve into a middle 0.99 area and two outside areas of 0.005. O 0, 2.897 O -3.355, 3.355 O 0, 3.355 O -2.897, 2.897

Find the t-value such that the area left of the t-value is 0.025 with 17 degrees of freedom.

Find two z values so that 58% of the middle area is bounded by them. Use a TI-83 Plus/TI-84 Plus calculator and round the answer to four decimal places, separated by a comma if needed. z =

Use the table to find the area to the right of t = 1.717 with 22 degrees of freedom. Area to the right Degrees of Freedom 0.20 0.10 0.05 0.025 0.01 0.005 21 0.859 1.323 1.721 2.080 2.518 2.831 22 0.858 1.321 1.717 2.074 2.508 2.819 23 0.858 1.319 1.714 2.069 2.500 2.807 24 0.857 1.318 1.711 2.064 2.492 2.797 25 0.856 1.316 1.708 2.060 2.485 2.787 According to the table, the area to the right of t = 1.717 is Now find the area to the left of t = 1.717, rounding the result to two decimal places. (area to the left of t = 1.717) = 1 – (area to the right oft = 1.717) - = 1 -