Answer:
For the first group, with 19 degrees of freedom, the critical value is t=2.093.
For the second group, with 21 degrees of freedom, the critical value is t=2.080.
Step-by-step explanation:
The critical value of the t-statistic depends on the significance level and the degrees of freedom of the sample.
For a significance level of 0.05, for a two-tailed test, there is an upper 2.5% and a lower 2.5%.
For the first group, with 19 degrees of freedom, the critical value is t=2.093.
For the second group, with 21 degrees of freedom, the critical value is t=2.080.
3^2= 9. And 9 times 0.2 is equal to C. 1.8
Answer:
181 1/4 square feet
Step-by-step explanation:
The square feet of carpet is needed to cover the floor would b equal to the area of the floor
area of a rectangle = length x breadth
12 1/2‘ x 14 1/2 = 181 1/4 square feet
If I did my math right, the right answer should be that the surface area of this triangular prism is 576 square meters.