Anew car was put into production. it involved many assembly tasks. each car was inspected at the end of the assembly line and the number of defects per unit was recorded. for the first 100 cars produced, there were 40 defective cars. some of the cars had no defects, a few had one defect, and so on. the distribution of defects followed a poisson distribution. based on the first 100 cars produced, about how many out of every 1,000 cars assembled should have one or more defects?

select one:
a. about 660
b. about 165
c. about 630
d. about 330

Apsychology student wishes to investigate differences in political opinions between business majors and political science majors at her college. she randomly selects 100 students from the 260 business majors and 100 students from the 180 political science majors. does this sampling plan result in a simple random sample? why or why not? no, because each group of 200 students in the sample does not have the same chance of being selected. yes, because each group of 200 students in the sample has the same chance of being selected. no, because each individual student does not have an equal chance of being selected. yes, because each individual student has the same chance of being selected.