2. Hourly wages. Based on a simple random sample of one hundred, re- searchers calculate a 95% confidence interval for the average hourly wage earned by construction workers in the city of Boston. This interval turns out to be from $16 to $22. (a) Does this mean we can say that roughly 95% of construction workers in the city earn hourly wages in the range $16 to $22? Explain briefly. (b) In order to have an estimate with a margin of error of $1, how much bigger a sample would researchers need