Your foreman claims that tree planting is a job for youngpeople. He further claims that 3/4 of tree planters are below theage of 21. You think he's exaggerating and the proportion of treeplanters under 21 is not nearly that high. You gain access to apage from the personnel files that has the birthdates for 50 treeplanters and count 32 who are under 21. Do you have enough evidence(at ?=.05α=.05) to conclude that your foreman is wrong and that theproportion of tree planters under 21 is less than 3/4?
