Question 7
Not yet
answered
Flag question
The weight of an adult bottlenose dolphin was found to follow a normal distribution with a mean of 550
pounds and a standard deviation of 40 pounds.
If X represents the mean weight of a random sample of 16 adult bottlenose dolphins, what is P(540 < x <
570) ?
a. 0.819
b. None of the others
c. 0.290
○ d. 0.401
○ e. 0.977
