Answer Happy

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 40 randomly selected countries are in the table below. X, cigarette sales Y, the number of bladder cancer deaths 24.96 5.27 25.82 3.52 25.91 5.21 29.14 5.3 30.34 3.46 14 3.31 28.64 5.98 31.1 5.11 25.89 4.63 21.58 4.65 28.92 4.79 23.32 3.72 23.44 2.86 26.92 4.69 21.25 5.14 18.2 2.9 22.06 3.72 28.6 4.46 20.08 2.94 33.6 4.78 27.91 4.75 42.4 6.54 22.86 4.78 18.06 3.25 28.27 4.46 23.75 3.95

23.75 40.46 27.56 20.94 21.16 19.96 22.57 20.1 16.08 26.38 21.17 23.44 23.78 29.18 22.12 a) State the random variables. 3.95 5.6 4.04 3.64 2.9 2.89 3.21 3.08 3.06 4.47 4.04 2.93 4.89 4.99 4.23 rv X = Select an answer of Select an answer rv Y = Select an answer of Select an answer b) The symbol and value of the correlation coefficient are as follows: Round final answer to 3 decimal places. Select an answer Interpret this value: • There is a strong Select an answer Select an answer relation between cigarette sales and the number of bladder cancer deaths for countries.

23.78 29.18 22.12 4.89 4.99 4.23 a) State the random variables. rv X = Select an answer V of Select an answer rv Y = Select an answer of Select an answer b) The symbol and value of the correlation coefficient are as follows: Round final answer to 3 decimal places. Select an answer Interpret this value: • There is a strong Select an answer Select an answer number of bladder cancer deaths for countries. relation between cigarette sales and the c) The symbol and value of the coefficient of determination are as follows: Round final answer to 3 decimal places. Select an answer Interpret this value: • About % of the Select an answer the linear model with Select an answer variable. Select an answer explained by V as its Select an answer