A researcher was interested in whether final course grades between those students who care about, or have an interest in, their courses are significantly different than those who do not. From a population of students enrolled in the same course, she recruited 4 individuals who DID care about the course and 5 individuals who did NOT care about the course. At the end of the semester, she recorded the final course grade for each individual (max = 100%). The data and mean for each group are below:

Students who did care (treat this group as μ1) : 95, 80, 87, 92, Avg = 88.5
Students who did not care (treat this group as μ2): 70, 85, 60, 88, 65, Avg = 73.6

Required:
a. State the null and research hypotheses in both symbols and words.
b. State the dftotal and your critical t, based on a p-level of 0.05.
c. Calculate and report the values for pooled variance, standard error, and the t-observed.
d. State your decision and interpret the result. Describe the results in APA format.

i dont know

step-by-step explanation:

for the friend request.

when a figure, such as triangle (xyz) is reflected over the line y = x to create x'y'z' the x-coordinates and y-coordinates of the original image (pre-image) will be reversed for the image. (e.g., (x, y) > (y, x)) this means that the pre-image position of the x- and y-coordinates switch places which in turn provides a mirror like image of the original xyz.  

i notice that when i draw a line segment from x to x', that the points are parallel from each other -- they are exactly across from each other and do not intersect with any other points.  

yes, think i would see the same characteristic if you drew the line segment connecting y with the reflecting line and then y' with the reflecting line because of the essence of reflections. because it is a mirror image, each point was effected the same way which leads me to conclude that they same would apply to y and y'.

median is the value separating the higher half of a data sample, a population or probablity distribution from the lower half.

step-by-step explanation:

say you have 3,8,7,3,1,9,8 order them from lowest to highest

if orderd it would be 1,3,3,7,8,8,9 now you take away from the lowest and the highest until you end up in the middle.

so you would remove the 1 and 9 leaving you with 5 digits remaining

when you've reached the middle that would be your answer so in this case the answer is 7

if there were two numbers left say 7 and 5 you'd and them together so 12 then divide by 2 witch would equal 6 so the answer would be 6

good luck on that project hoped i you at all

answer: the answer is 110