The breakdown voltage of a randomly chosen diode of a certain type is known to be normally distributed with mean value 40 V and standard deviation 1.5 V. a. What is the probability that the voltage of a single diode is between 39 and 42? b. What value is such that only 15% of all diodes have voltages exceeding that value? c. If four diodes are independently selected, what is the probability that at least one has a voltage exceeding 42?

Elementary Statistics Notes Amanda Selly August 22, 2016 Statistics: is the practice of taking data and making inferences with that data Inferential Statistics: Ex. In general students Descriptive Statistics: who are in STAT 154 are taking 14.3 credit hours Ex: the average number of credits in STAT 154-02 Unsafe and difficult to is 14.3 rely on