The manager of a home improvement store wants to know the percent of residents in his own town who mow their own lawns. To find out, he selects a random sample of 100 customers and asks each one if he or she mows the lawn. Describe how under coverage might lead to bias in this study. Explain the likely direction of the bias.

Kevin has a spinner that has 10 equal sections and 2 sections of each color—red, blue, green, yellow, and purple. kevin spins the spinner 180 times. kevin determines about how many times the spinner will land on red or green, and his work is shown below. -kevin has the formula reversed; it should be the total number of sections over the number of red or green sections. -kevin should have used a 4 in the numerator because there are 2 red sections and 2 green sections. -kevin should multiply by the number of sections in the spinner rather than the total number of spins. -kevin calculated the prediction correctly and did not make any mistakes.