Use the table to answer the question. Note: Round z -scores to the nearest hundredth and then find the required A values using the table. A manufacturer of light bulbs finds that one light bulb model...

Use the table to answer the question. Note: Roundz-scores to the nearest hundredth and then find the requiredA values using the table.


A manufacturer of light bulbs finds that one light bulb model has a mean life span of 1028 h with a standard deviation of 90 h. What percent of these light bulbs will last as follows? (Round your answers to one decimal place.)