An experienced farmer says that the standard deviation for the number of lettuce plants that can grow in one acre is at most 59 plants. The soils department comes to
the farm and randomly selects 15 acres and finds that the number of lettuce plants
per acre has a standard deviation of 62 plants. Is there enough evidence to reject the
farmer's claim at a 10% level of significance? Make sure to state the hypotheses, p
value with interpretation and conclusion.

Data from 2005 for various age groups show that for each $100 increase in the median weekly income for whites, the median weekly income of blacks increases by $105. also, for workers of ages 25 to 54 the median weekly income for whites was $676 and for blacks was $527. (a) let w represent the median weekly income for whites and b the median weekly income for blacks, and write the equation of the line that gives b as a linear function of w. b = (b) when the median weekly income for whites is $760, what does the equation in (a) predict for the median weekly income for blacks?