Solution :
The data is normally distributed.
The standard deviation is 18 days
Here the data is normally distributed and 54 days is 3 days of standard deviation.
Therefore, the percentage of the births that would be
within the 54 days of the mean
length is given by :
= P( -3 < Z < 3)
= 0.9544
= 95 %
Therefore, about 95% of the births would be
within 54 days of the men
length.
Avarage speed is (60+30)/2 = 45 miles per hour
bot is the same , Do not think so it is a right question.
The correct answer it’s 4
Answer:
21.3 m
Step-by-step explanation: