In a certain breed of cattle, the length of gestation has a mean of 284 days and a standard deviation is 5 point 5 days. One length of gestation had a z -score of negative 1 point 7 0 Which of the following sentences best interprets this z -score?
Answer
A
The length of this gestation period was shorter than the mean length of gestation periods by 1 point 7 days.
B
The length of this gestation period was longer than the mean length of gestation periods by 1 point 7 standard deviations.
C
The length of this gestation period was longer than the mean length of gestation periods by 1 point 7 days.
D
The length of this gestation period was shorter than the mean length of gestation periods by 1 point 7 standard deviations.