Question

The average life of an automobile tire of a certain manufacturer follows a Normal distribution, with a mean of 32,000 miles and a standard deviation of 1,250.

Which z-score separates the lower 70% from the upper 30% of the tires?


0.30

0.52

0.70

0.85

Answer 1

B) 0.52

Explanation:

edge 2023

Answer 2

0.52

Explanation:

It’s right on edge.