Stats final

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stat_final_answer_sheet.docx

Answer all 25 questions. Make sure your answers are as complete as possible. Show all of your work and reasoning. In particular, when there are calculations involved, you must show how you come up with your answers with critical work and/or necessary tables. Answers that come straight from programs or software packages will not be accepted. If you need to use software (for example, Excel) and /or online or hand-held calculators to aid in your calculation, please cite the source and explain how you get the results.

When requested, show all work and write all answers in the spaces allotted on the following pages. You may type your work using plain-text formatting or an equation editor, or you may hand-write your work and scan it. In either case, show work neatly and correctly, following standard mathematical conventions. Each step should follow clearly and completely from the previous step. If necessary, you may attach extra pages.

Record your answers and work.

Problem Number

Solution

1

(25 pts)

Answers:

(a)

(b)

(c)

(d)

(e)

Work for (a), (b), (c), (d) and (e):

2

(5 pts)

Answer:

Study Time (in hours)

Frequency

Relative Frequency

0.0 – 4.9

5

 

5.0 - 9.9

13

 

10.0 - 14.9

 0.22

15.0 -19.9

42

20.0 – 24.9

 

Total

100

 

Work:

3

(5 pts)

Answer:

Work:

4

(5 pts)

Answer:

Work:

5

(5 pts)

Answer:

Work:

6

(5 pts)

Answer:

Work:

7

(10 pts)

Answer:

Work:

8

(5 pts)

Answer:

Work:

9

(5 pts)

Answer:

Work:

10

(5 pts)

Answer:

Work:

11

(5 pts)

Answer:

Work:

12

(10 pts)

Answer:

Work:

13

(10 pts)

Answer:

Work:

14

(5 pts)

Answer:

Work:

15

(15 pts)

Answer:

(a)

x

P(x)

0

 

1

 

2

 

3

 

(b) mean = __________ , and standard deviation = _____________

Work for (a) and (b):

16

(20 pts)

Answer:

(a)

(b)

(c)

Work for (a), (b) and (c) :

17

(10 pts)

Answer:

Work:

18

(5 pts)

Answer:

Work:

19

(5 pts)

Answer:

Work:

20

(10 pts)

Answer:

Work:

21

(15 pts)

Answer:

(a)

(b)

(c)

Work for (a), (b) and (c):

22

(20 pts)

Answer:

(a)

(b)

(c)

(d)

Work for (b) and (c):

23

(10 pts)

Answer:

(a)

(b)

(c)

Work for (a), (b) and (c):

24

(20 pts)

Answer:

(a)

(b)

Work for (a) and (b):

25

(15 pts)

Answers:

(a)

(b)

(c)

(d)

Work for (b) and (c):