Lamar collected a random sample of data about the number of letters in the full names of seventh graders at his school. His sample mean was 10.2
10.2. Lamar's teacher told him that the population mean is
12.4
12.4. Lamar thinks he did something wrong because his sample mean is not the same as the population mean.

Should Lamar be concerned?

Pls help

Write an equation of a line in slope intercept form that is perpendicular to the line 2x -3y = 12 and passes through the point (2, 6).

Name the most appropriate metric unit for each measurement

Which statement accurately explains whether a reflection over the y-axis and a 270° counterclockwise rotation would map figure acb onto itself? a coordinate plane with figure acb with point a at 1, 1, c at 3, 4 and b at 5, 1 yes, a″c″b″ is located at a″(1, 1), c″(4, 3), and b″(1, 5) yes, a″c″b′ is located at a″(1, 1), c″(3, 4), and b″(5, 1) no, a″c″b″ is located at a″(1, 1), c″(4, 3), and b″(1, 5) no, a″c″b″ is located at a″(1, 1), c″(3, 4), and b″(5, 1)