Question
Let x be a random variable that represents the percentage of successful free throws a professional basketball player makes in a season. Let y be
Letxbe a random variable that represents the percentage of successful free throws a professional basketball player makes in a season. Letybe a random variable that represents the percentage of successful field goals a professional basketball player makes in a season. A random sample ofprofessional basketball players gave the following information.
X: 85, 85, 88, 69, 65, 85
Y: 57, 48, 59, 47, 43, 58
Given that Se=4.144, a=5.796, b=0.581, and x=79.500 find a 90% confidence interval for(slope of the population regression line) and interpret its meaning.
A)The 90% confidence interval forBis from 0.180 to 0.983 and means that for every percentage increase in successful free throws, there is 90% confidence that the percentage of successful field goals increases by an amount between 0.18 and 0.98.
B) The 90% confidence interval forBis from 0.200 to 0.962 and means that for every percentage increase in successful free throws, there is 90% confidence that the percentage of successful field goals increases by an amount between 0.20 and 0.96.
C) The 90% confidence interval forBis from 0.216 to 0.947 and means that for every percentage increase in successful free throws, there is 90% confidence that the percentage of successful field goals increases by an amount between 0.22 and 0.95.
D) The 90% confidence interval forBis from 0.057 to 1.105 and means that for every percentage increase in successful free throws, there is 90% confidence that the percentage of successful field goals increases by an amount between 0.06 and 1.11.
E) The 90% confidence interval forB is from 0.271 to 0.891 and means that for every percentage increase in successful free throws, there is 90% confidence that the percentage of successful field goals increases by an amount between 0.27 and 0.89.
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