Cigarette smoking and cancer have been linked. The number of bladder cancer deaths (in deaths per 100 thousand) and cigarette sales (in cigarettes sold/person) for 36 randomly selected countries are in the table below. X, cigarette sales Y, the number of bladder cancer deaths 14 3.31 20.94 3.64 25.91 5.21 28.64 5.98 25.82 3.52 25.89 4.63 42.4 6.54 33.6 4.78 27.91 4.75 18.2 2.9 22.86 4.78 28.27 4.46 28.04 3.2 20.08 2.94 29.14 5.3 19.96 2.89 23.32 3.72 24.96 5.27 26.38 4.47 21.16 2.9 21.58 4.65 29.18 4.99 21.84 2.91 22.12 4.23 30.34 3.46 40.46 5.6 21.25 5.14 23.44 2.86 16.08 3.06 22.06 3.72 23.44 2.93 20.1 3.08 26.18 4.09 28.92 4.79 23.78 4.89 18.24 2.99 a) State the random variables. rv X = of rv Y = of b) The symbol and value of the correlation coefficient are as follows: Round final answer to 3 decimal places. = Interpret this value: There is a strong relation between cigarette sales and the number of bladder cancer deaths for countries. c) The symbol and value of the coefficient of determination are as follows: Round final answer to 3 decimal places. = Interpret this value: About % of the explained by the linear model with as its variable.

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

Cigarette smoking and cancer have been linked. The number of bladder cancer deaths (in deaths per 100 thousand) and cigarette sales (in cigarettes sold/person) for 36 randomly selected countries are in the table below.

X, cigarette sales	Y, the number of bladder cancer deaths
14	3.31
20.94	3.64
25.91	5.21
28.64	5.98
25.82	3.52
25.89	4.63
42.4	6.54
33.6	4.78
27.91	4.75
18.2	2.9
22.86	4.78
28.27	4.46
28.04	3.2
20.08	2.94
29.14	5.3
19.96	2.89
23.32	3.72
24.96	5.27
26.38	4.47
21.16	2.9
21.58	4.65
29.18	4.99
21.84	2.91
22.12	4.23
30.34	3.46
40.46	5.6
21.25	5.14
23.44	2.86
16.08	3.06
22.06	3.72
23.44	2.93
20.1	3.08
26.18	4.09
28.92	4.79
23.78	4.89
18.24	2.99