Answer:64 students
Step-by-step explanation:
using the empirical rule, we know that 34% of a normal distribunion is below the mean but above 1 standard deviation. This means that 16% of the students enter before 9:55. Take 16% of 400 and you get the amount of students in before 9:55
The absolute value - or distance from zero, is fairly simple to find. Make your final answer positive to find it.
How do you want me to answer this? Do you want me to find "x", please explain in order for help. :)
