6. 6. The sugar the the protein level were measured for each animal in a sample

Question

6. 6. The sugar the the protein level were measured for each animal in a sample of bulls. and and A scatterplot was drawn with sugar level plotted on the horizontal and protein level plotted on the vertical 0) axis. The co of determination, r2, between these two variables was found to be 0.81. of the following, which is the best interpretation of this value of r2? (A) 81% of the variation in protein levels can be explained by the least squares regression line relating protein level and sugar level. (B) 81% of the variation in protein levels and sugar levels can be explained by the least squares regression line relating protein level and sugar level. (C) 81% of the protein levels can be explained by the least squares regression line relating protein level and sugar level. (D) 81% of the sugar levels can be explained by the least squares regression line relating protein level and sugar level. (E) 81% of the relationship between sugar level and protein level can be explained by the least squares regression line.

Explanation / Answer

8.
A cube is rolled 5 times.

P( no of sixes rolled is either 1 or 2)

= 5C1 (1/6)^1 (5/6)^4 + 5C2 (1/6)^2 (5/6)^3

= .563

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