A Researcher Wants to Estimate the Proportion of a Population

Multiple Choice

A researcher wants to estimate the proportion of a population which possesses a given characteristic.A random sample of size 250 is taken and 40% of the sample possesses the characteristic.The 90% confidence interval to estimate the population proportion is ___.

A) 0.35 to 0.45
B) 0.34 to 0.46
C) 0.37 to 0.43
D) 0.39 to 0.41
E) 0.40 to 0.45