From a survey of 200 coworkers you find that 84 would like the company to provide on-site day care. a) What is the value of the sample proportion p? b) What is the standard error of the sample proportion? c) Construct an approximate 95% confidence interval for the true proportion p by taking 2 SEs from the sample proportion. a) (Type an integer or a decimal.) b) The standard error of the sample proportion is (Round to three decimal places as needed.) c) The approximate 95% confidence interval for the true proportion p by taking +2 SEs from the sample proportion is ( (Round to three decimal places as needed.)