The dot plots below show the test scores of sixth and seventh grade students

based on visual inspection of the dot plots witch grade if any appears to have the higher mean score
a. grade 6
b. grade 7
c. both groups show about the same mean score
d. no conclusion about mean score can be made from the data

What is the solution to the equation in the & show work i’m very

Needmax recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.

Combine the information in the problem and the chart using the average balance method to solve the problem.