1. Compute the appreciate of the mutuality coefficient.

x 49 60 42 55 52

y 305 330 255 308 285

A) 0.912

B) 0.945

C) 0.892

D) 0.707

2. If the equation for the return succession is y' = 11x + 8, then a appreciate of x = –1 gain end in a predicted appreciate for y of

A) 8

B) 3

C) –3

D) 11

3. If the mutuality coefficient is 0.790, what is the explained discrepancy?

A) 37.6%

B) 62.4%

C) 79%

D) 21%

4. If the mutuality coefficient is 0.930, what is the obscure discrepancy?

A) 7%

B) 93%

C) 13.5%

D) 86.5%

5. The entirety order cholesterol ardors, in mg/dL, are shown underneath for a haphazard illustration of six nation. In the board underneath, x is the age of the matter and y is the matter's entirety cholesterol ardor. Find the 95% forebodement cessation when x = 53 years.

x (age) 36 43 53 67 66 78

y (mg/dL) 208 224 238 238 277 263

6. A psychologist wants to determine if there is a successionar interconnection betwixt the calculate of hours a individual goes externally doze and the calculate of mistakes he/she makes on a ultimate standard. The subjoined grounds is narrative. Determine the return succession equation

Hours externally Sleep, x 32 38 48 24 46 35 30 34 42

Number of Mistakes, y 6 8 13 5 7 6 5 8 12

7. An division preceptor hypothesizes that the developed grades in her dispose are as sorted as 10% A's, 23% B's, 45% C's, 14% D's, and 8% F's. At the end of the semester, she has the subjoined grades.

A B C D F

6 14 22 8 4

Find the delicate appreciate. Use alpha= 0.05

A) 9.236

B) 7.779

C) 11.070

D) 9.488

8. ANOVA is an terseness for the subjoined term:

A) decomposition of estrangement

B) estrangement

C) Scheffé standard

D) Tukey standard

9. The top of the English portion wants to determine if the mediocre calculate of students prelude an English method differs depending upon the date of day that the method is life offered. Is there a suggestive disagreement betwixt the moderation attendance for the disposees fond for 0.05 alpha ?

Morning 25 26 27 26 27

Afternoon 25 24 18 20 23

Evening 27 26 24 23 25

A) Yes, there is a suggestive disagreement betwixt the moderations.

B) No, there is no suggestive disagreement betwixt the moderations.

C) The F-standard cannot be used to defense whether or not there is a suggestive disagreement betwixt the moderations.

10. A contingency board has 5 rows and 4 columns. How divers degrees of insubservience are there?

A) 20

B) 12

C) 16

D) 15

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