Information Subject X Y 1 13 15 2 13 15 3 15 11 4 26 34 5 17

Information

       Subject                 X                                Y

          1                      13                                15

          2                      13                                15

          3                      15                                11

          4                      26                                34

          5                      17                                28

          6                      16                                22

Question 26 (1 point)

Y =

Question 26 options:

0

2418

521

125

Question 27 (1 point)

the standard deviation of X, or: s.d._x=

Question 27 options:

4.84

7.05

4.42

49.70

Question 28 (1 point)

standard deviation of y, or sd_y=

Question 28 options:

59.14

8.84

8.07

8.22

Question 29 (1 point)

r =

Question 29 options:

.65

1.23

.86

.74

Question 30 (1 point)

Is the correlation coefficient for the above data statistically significant?

Question 30 options:

Yes

No

Can\'t be determined from the information given

	0
	2418
	521
	125

Solution

Consider the table:

26.

Sum(y) = 125 [answer]

27.

Using technology to get sdx,

sdx = 4.844240567 = 4.84 [answer]

28.

Using technology to get sdy,

sdy = 8.841191473 = 8.84 [answer]

29.

Using technology to get r,

r = 0.857677153 = 0 .86 [answer]

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X	Y	X^2	Y^2	XY
13	15	169	225	195
13	15	169	225	195
15	11	225	121	165
26	34	676	1156	884
17	28	289	784	476
16	22	256	484	352
100	125	1784	2995	2267