Answer:
D
Step-by-step explanation:
i think so but it will help you
Answer:
just add them
Step-by-step explanation:
Answer:
47
Step-by-step explanation:
Answer:
99.7%
Step-by-step explanation:
the standard deviation is 4 minuet but there is always outliers so thats why its not 100% of the time and the minutes are coverd by the deviation.