5) 8 points. A student taking a true-false online test with 7 questions did not study and decides to guess for each answer. Assuming the student has a 50/50 chance of guessing correctly, what is the probability they will successfully guess at least 5 correct answers out of 7 questions? Show your Excel or Ti84 command11]} (6 points} State the null and alternative hypotheses in symbolic form for the claim that the mean number at units for Uentura lEnllege students with a fulltime job is less than 8 units