2a) Testing indicates that the lifetime of a NOVO espresso machine is normal, with mean u = 7 years and standard deviation 0 = 2 years. From Figure below, it can be seen that every value of the random variable X, lifetime, has a corresponding standardised Z value. Lifetime NOVO espresso machine [14-10 u+26 \"+30 9 11 13 Xscale, years 0.1 = 7. 0' = 2) +1 +2 +3 Zscale (u = 0. 0' = 1} What is the probability that a NOVO espresso machine will last at least 9 years? 2b) What is the probability that the lifetime of a NOVO espresso machine will be between 7 and 9 years? 2c) What is the probability that the lifetime of a NOVO espresso machine is at most 7 years or at least 9 years? 2d) What is the probability that the lifetime of a NOVO espresso machine is between 5 and 9 years