Some laptops are produced in lots of n=48 and p^=.24 laptops are found defective. Let r be random variable representing number of defective laptops, and p^ be proportion of defective laptops in a lot. Employ 4 decimal points for your answer.
A) can p^ be approximated by normal random variable? Find by testing
B) find μ
C) find σ
D) Find P(r_> 11)