Last year's survey of squirrels from around the campus found a large number of squirrels with different tail types, which may or may not be a polymorphic trait. There were 229 squirrels with flat tails and 262 squirrels with bushy tails. Assuming that the genotype necessary to produce flat tails is homozygous recessive (i.e. bb) calculate the frequency of the b allele in the squirrel population to two decimal places