Criterion: Identify IV, DV, and hypotheses and evaluate the null hypothesis for an independent samples t test. Data: Use the information from Problem Set 3.8. Instructions: Complete the following: a. Identify the IV and DV in the study. b. State the null hypothesis and the directional (one-tailed) alternative hypothesis. c. Can you reject the null hypothesis at α = .05? Explain why or why not.

The table is missing in the question. The table is provided here :

Group 1        Group 2

 34.86            64.14      mean

 21.99            20.46      standard deviation

  7                    7                n

Solution :

a). The IV or independent variable = Group 1

    The DV or the dependent variable = Group 2

b).

  Therefore,  

t = -2.579143

Now,  

           df = 7 - 1

               = 6

Therefore the value of p :

 = 0.020908803

The p value is 0.0209

So we reject the null hypothesis and conclude that

its line 2 i just added the rest or else it wouldn't let me answer

the image is given below

since the options are not given so we draw it from the equation

the given equation is

y = (x-1) (x+4)

y = y² + 3x - 4

the above equation is a quadratic equation which will have two roots. if we draw the graph for it, it will look like this