Answer to Question #59913 in Statistics and Probability for joseph ogala

Question

2 Components of a certain type are shipped to a supplier in batches of ten. Suppose that 50% of all such batches contain no defective components. 30% contain one defective component, and 20% contain two defective components. Two components from a batch are randomly selected and tested. What are the probabilities associated with 0.1, and 2 defective components being in the batch under the condition that neither tested component is defective.

4 The error involved in making a certain measurement is a continuous rv X with pdf
f(x)={0.09375(4−x2)0−2≤x≤2otherwise
f(x)={0.09375(4−x2)−2≤x≤20otherwise
compute P(-1