The fasting blood sugar level of all men aged 20 to 35 follows a population distribution with mean = 72mg/dL and standard deviation = 18mg/dL .

If 100 men aged 20 to 35 are selected randomly, the probability that the sample mean will be between 69 and 75 mg/dL is?

?

The equation of the least-squares regression line is: Tread depth = 360.14 12.39x (thousands of miles). Also, r2 = 0.913

Which of the following statements is true?

	The correlation between tread depth and miles is -0.955
	The correlation between tread depth and miles is .913
	91.3% of the data points fall on the least-squares regression line
	The data value marked with x is influential