A box contains 33 parts, of which 2 are defective and 31 are nondefective. 2 parts are selected without replacement. (a) Find the probability P(both are defective). (Give your answer correct to two decimal places.) (b) Find the probability P(exactly one is defective). (Give your answer correct to two decimal places.) (c) Find the probability P(neither is defective). (Give your answer correct to two decimal places.)

Graph y ≥ -x^2 - 1. click on the graph until the correct graph appears.

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.

Tabby sells clothing at a retail store, and she earns a commission of 6.25% on all items she sells. last week she sold a pair of jeans for $32.50, a skirt for $18.95, and 2 blouses for $14.95 each. what was tabby's total commission? a $4.15 b $5.08 c $81.35 d $348.60