Question

Use the following data and conduct a two-tailed hypothesis test using = .05. a. What are EX, CY, (CX)(CI)? b. What is EXY? c. What are your hypotheses? d. What are your degrees of freedom? e. What is the critical value? f. What is the value of Pearson /? g. What do you conclude? Participant Reading Speed Test Score Number of Books Read (Y) (X) 16 F

Answer 1

a)

x	y
9	6
16	7
24	10
12	5
5	2
18	8
84	38

$\sum x = 84 , \sum y = 38 , \sum x \sum y = 84*38 = 3192$

b)

x	y	x*y
9	6	54
16	7	112
24	10	240
12	5	60
5	2	10
18	8	144
84	38	620

$\sum xy = 620$

c)

Ho :$\rho = 0$

$H_a : \rho \neq 0$

d)

df =n-2 = 4

e)

critical r = 0.811

f)

r = 0.9497

g)

since r > critical value

we reject the null hypothesis