The principal at riverside high school would like to estimate the mean length of time each day that it takes all the buses to arrive and unload the students. how large a sample is needed if the principal would like to assert with 90% confidence that the sample mean is off by, at most, 7 minutes. assume that s = 14 minutes based on previous studies. show all your work.

You can find the constant of proportionality by finding the ratio of

Gh bisects fgi. find the measure of hgi •15° •21° •10° •8°

The box plots show the distributions of the numbers of words per line in an essay printed in two different fonts.which measure of center would be best to compare the data sets? the median is the best measure because both distributions are left-skewed.the mean is the best measure because both distributions are left-skewed.the median is the best measure because both distributions are symmetric.the mean is the best measure because both distributions are symmetric