A recent survey of 100 randomly selected families showed that 18 did not own a single television set and used alternative devices for entertainment. Find the 95% confidence interval of the true proportion of families who do not own a television set. (a) State the parameter the confidence interval will estimate. (b) Identify the conditions that must be met to use this procedure and explain how you know that each one has been satisfied. (c) Find the point estimate and the margin of error for a 95% confidence interval. (d) Estimate the true proportion of families who do not own a television set. State your answer in the context of the setting