There is a probability of 3.95% that the randomly selected adult parakeet will be less than 7.55 inches long
What is z score?
Z score is used to determine by how many standard deviations the raw score is above or below the mean. It is given by:
z = (raw score - mean)/standard deviation
Given that:
Mean = 8 inches, standard deviation = 0.25 in, For < 7.55 in:
z = (7.55 - 8) / 0.25 = -1.8
P(z < -1/8) = 0.0395
There is a probability of 3.95% that the randomly selected adult parakeet will be less than 7.55 inches long
Find out more on z score at: https://brainly.com/question/25638875
