Technical information
Behaviour being used: Adaptive mode
Minimum fraction: 0
Question summary: UTILITY BILLS The monthly utility bills in a city are normally distributed with a mean of $100 and a standard deviation of $12. A utility bill is randomly selected. * Find the probability to three significant figures that the utility bill is less than $70. _____ * Find the probability to three significant figures that the utility bill is between $90 and $120. _____ * Find the probability to three significant figures that the utility bill is more than $140. _____
Right answer summary: part 1: 0.00621; part 2: 0.75; part 3: 0.000429
Question state: todo