Lancet (Mar. 29, 1975) reported on the relationship, in children with elevated levels of lead, between age and a measure of wrist flexor and extensor muscle function. The measure involved the number of taps with a stylus on a single metal plate during a 10 second period. The data are x = age in months and y = taps/10 sec.
Check that you have entered the data correctly. Use the linear regression capacity of your calculator to find the least squares line for this data. State the slope of the line to three places of decimal.
a. State the first residual rounded to three places of decimal.
b. State the value of serounded to 3 places of decimal.