Question

75 POINTS!!! PLEASE ANSWERl

The average size of a pair of women's shoes sold at a shoe store is size 8, with a standard deviation of 1.5
sizes. If the sizes are normally distributed, what is the percentile rank of at least a size 9. Go to z-table.com

Answer 1

• 75%

Explanation:

Find z-score:

• z = (9 - 8)/1.5 ≈ 0.67

Get the rank from the z-table:

• 0.7486 ≈ 75%