Ans. 6) Assuming that the lifetime of a certain type of light bulbs is normally distributed. The mean lifetime of a light bulb is SH+L'F hours with a standard deviation of (H)(F)(L) hours. You are commissioned to procure TL light bulbs. How many light bulbs would you expect to last: RAW DATA: H=5,T=25, F=6,L=3,S=45 A. between (T-L-H) calendar years and (T+L+H) calendar vears? Ans. Scanned with CamScanner B. between (7-H) calendar years and (T+L) calendar years? Ans. C. less than (S/T)(SH-F) hours? Ans D. more than (T/S) (SH-F) hours? Ans. E. less than H - F calendar years? Ans. F. more than T- H calendar years? Ans