The correlation between the height and weight of children aged 6 to 9 is found to be about r = 0.8. Suppose we use the height x of a child to predict the weight y of the child. We conclude

A. the least-squares regression line of y on x would have a slope of 0.8.B. about 80% of the time, age will accurately predict weight. C.height is generally 80% of a child's weight. D.the fraction of variation in weights explained by the least-squares regression line of weight on height is 0.64.

(co 3) the soup produced by a company has a salt level that is normally distributed with a mean of 5.4 grams and a standard deviation of 0.3 grams. the company takes readings of every 10th bar off the production line. the reading points are 5.8, 5.9, 4.9, 6.5, 5.0, 4.9, 6.2, 5.1, 5.7, 6.1. is the process in control or out of control and why? it is out of control as two of these data points are more than 2 standard deviations from the mean it is in control as the data points more than 2 standard deviations from the mean are far apart it is out of control as one of these data points is more than 3 standard deviations from the mean it is in control as the values jump above and below the mean

04.05 graphing exponential functions write an exponential function to represent the spread of bens social media post

Solve -3 (r + 5) = -9 enter ur answer in the box x = __