Answer Happy

a) What is the probability that fewer than 5 of the 20 sampled invoices receive the discount? b) What is the probability that more than 5 of the 20 sampled invoices receive the discount? 3. A mechatronic assembly is subjected to a final functional test. Suppose that defects occur at random in these assemblies, and that defects occur according to a Poisson distribution with parameter λ=4 what is the probabilify that an asscmbly will have 2 or fewcr defects? Bi Calculate the mean s Calculate the standard deviakion. 4. The output voltage of a porwer supply is normally distribared with mean 5 V and standard deviation 2.4 V. If the lower and upper specifications for voltagc are 4.95 V and 5.05 V, respectively, what is the probability that a porser supply selected at random will conform to the specification on voltage?
2. A large industrial firm allows a discount on any invoice that is paid within 30 days. Of all invoices, 22% receive the discount. In a company audit, 20 invoices are sampled at random. (HINT: Binomial Distribution, Excel Function: BINOMDIST( x,n,p, cumulative )) a) What is the probability that fewer than 5 of the 20 sampled invoices receive the discount? b) What is the probability that more than 5 of the 20 sampled invoices receive the discount?