Aresearcher is estimating the mean income of residents in a large city. the income variable is usually skewed to the right. she collects a random sample of 25 people. the resulting 95% confidence interval is ($26700, $35400). which one of the following conclusions is valid? group of answer choices we are 95% confident that the mean income for all residents of this city is between $26700 and $35400. 95% of the residents of this city have an income between $26700 and $35400. no conclusion can be drawn.