A market researcher wants to estimate the unknown proportion of Americans who use foreign cars. On the basis of a sample 75 residents in a big residential area, it appears that the point estimate of the proportion of residents with a foreign car is 0.45. An estimate of the standard error of this point estimate is

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.