COVID-19 (novel corona virus) took the world by surprise in late 2019. By early 2020, nearly all countries worldwide were affected. Early reports have claimed that a large percentage of those infected with the corona virus were asymptomatic (showed no symptoms of the virus). The rate of asymptomatic infections is important, since such people can unwittingly spread the virus to those around them. Suppose the U.S. Centers for Disease Control and Prevention (CDC) needs to estimate the proportion of the infected population that is also asymptomatic. A random sample of 1170 infected patients is examined and 166 are observed to be asymptomatic. Determine the point estimate, p and the sample standard deviation, sp. Round the sample proportion to four decimal places and round the standard deviation to six decimal places, if necessary. Sp =

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