Question

A soon-to-be-introduced cell phone has an expected service life that can be modeled by a normal distribution with a mean of 5 years and a standard deviation of 1.0 years. Use Table A and Table B. a. If the company offers a warranty of four years, what percentage of cell phones can be expected to fail before that time? (Round your answer to 4 decimal places.) b. What probability can you assign to a service life of 5.9 years? (Round your answer to 4 decimal places.) c. What probability can you assign to a service life of 6.2 years? (Round your answer to 4 decimal places.) This is the third time i have asked this question and no one can seem to know.

Answer 1

A soon-to-be-introduced cell phone has an expected service life that can be modeled by a normal distribution with a mean of 5 years and a standard deviation ...