In: Statistics and Probability
A manufacturer knows that their items have a normally
distributed lifespan, with a mean of 3.7 years, and standard
deviation of 1.1 years. Round all answers to 3 decimals.
(a) If you randomly purchase one item, what is the probability it
will last longer than 4 years?
Show your work. Show me what you entered into the calculator.
(b) If you randomly select one item, what is the probability it
will last less than 5 years?
Show your work. Show me what you entered into the calculator.
(c) Find the number of years that corresponds to the 46 th
percentile.
Show your work. Show me what you entered into the calculator.