A manufacturer of fitness equipment inspects a random sample of the welds that are performed on various pieces of equipment in an effort to monitor the quality and strength of the equipment.During one week, a random sample of 200 welds showed that 15 of the welds were defective.Which of the following represents a 90% confidence interval for the population proportion of defective welds? Note that z_0.05=1.645, z_0.025=1.96, z_0.005=2.576. (Round your answer to 3 decimal places.)

a.[.038, .112]

b.[.044, .106]

c.[.032, .118]

d.[.064, .086]

e.[.056, .094]