Previous surveys reported that more men than women trade stocks online. Robinhood randomly selected a sample of investors. They found that 54 out of 233 men traded online and 38 out of 253 women traded online. The 95% confidence interval for the difference in proportions is O 25% to 8% 1 2% to 15.1% O 8% to 15%% -2%% to 12%