In a random sample of 83 survey respondents, about 30.1% of the sample work less than 40hr per week. Calculate: The estimated standard error for the group of respondents who work 40 hours OR MORE per week = _____ ( enter two decimal places).
The 90% confidence interval for the proportion of respondents who work 40 hours OR MORE per week is _____ to _______
(Hint remember to use the standard error formula that applies to proportion estimates.)