Human resource

In a poll of 507 human resource professionals, 53.8% said that body piercings and tattoos were big grooming red flags. Complete parts (a) through (d) below. a) Among the 507 human resource professionals who were surveyed, how many of them said that body piercings and tattoos were big grooming red flags? (Round to the nearest integer as needed.) b) Construct a 99% confidence interval estimate of the proportion of all human resource professionals believing that body piercings and tattoos are big grooming red flags. c) Repeat part (b) using a confidence level of 80%.

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