In a musical notation, from the initials TTBB, T stands for tenor and B for baritone, denoting an four men chorus. The actual configuration of this group is Tenor 1 and Tenor 2, Baritone 1 and Baritone 2.
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
