The school board administered a reading test to all eighth-grade students at high achievers charter school and determined that 10%, percent of them were reading below grade level.
based on this data, which of the following conclusions are valid?

choose 1
a 10% percent of students in this sample are reading below grade level, but we cannot conclude anything about the eighth-grade students at hacs.

b 10% percent of all students at hacs are reading below grade level.

c 10% percent of all eighth-grade students at hacs are reading below grade level.

Terri makes a quilt using three sizes of fabric squares the side lenght of each fabric square is the square root of the area

Write an inequality for this description. - one fourth of the opposite of the difference of five and a number is less than twenty.

Each of the following data sets has a mean of x = 10. (i) 8 9 10 11 12 (ii) 7 9 10 11 13 (iii) 7 8 10 12 13 (a) without doing any computations, order the data sets according to increasing value of standard deviations. (i), (iii), (ii) (ii), (i), (iii) (iii), (i), (ii) (iii), (ii), (i) (i), (ii), (iii) (ii), (iii), (i) (b) why do you expect the difference in standard deviations between data sets (i) and (ii) to be greater than the difference in standard deviations between data sets (ii) and (iii)? hint: consider how much the data in the respective sets differ from the mean. the data change between data sets (i) and (ii) increased the squared difference îł(x - x)2 by more than data sets (ii) and (iii). the data change between data sets (ii) and (iii) increased the squared difference îł(x - x)2 by more than data sets (i) and (ii). the data change between data sets (i) and (ii) decreased the squared difference îł(x - x)2 by more than data sets (ii) and (iii). none of the above