A student takes an 18-question, multiple-choice exam with five choices for each question and guesses on each question. Assume the variable is binomial. Part 1 out of 2 Find the probability of guessing at least 14 out of 18 correctly. Round intermediate calculations and final answers to three decimal places. P(guessing at least 14 out of 18 correctly) =

Guidance Missile System A missile guidance system has four fail-safe components. The probability of each failing is

0.05. Assume the variable is binomial. Find the following probabilities. Do not round intermediate values. Round the final answer to three decimal places.

(a)Exactly two will fail=