Answer:
Step-by-step explanation:
Solving the equation, it is found that it has no solutions, thus, the student is not correct.
Answer:
The z-scores for which 3% of the distribution's area lies between -z and z is z=0.03761.
Step-by-step explanation:
We have to find the z-score z* for which the following condition is satisfied:

This means that half of the area is at the left of the mean and half is at the right, so we have:

Then, we have:

answer is b.Step-by-step explanation:
Times thoghs by each other and see what u get