Robin surveyed 5 students from the choirs of 4 different schools. He asked them how many hours they practice singing each day. School A: 3, 2, 1, 1, 2 School B: 2, 3, 4, 3, 3 School C: 1, 2, 1, 0, 1 School D: 2, 2, 1, 2, 3 The data for school has the highest center of distribution. The data for school has the lowest center of distribution.

Which statement best describes the polynomial

Anormally distributed data set has a mean of 176.3 and a standard deviation of 4.2. what is the approximate z-score for the data value of 167.9? 2.00 −2.00 8.4 −8.4

Which statements are true? check all that apply. the line x = 0 is perpendicular to the line y = –3. all lines that are parallel to the y-axis are vertical lines. all lines that are perpendicular to the x-axis have a slope of 0. the equation of the line parallel to the x-axis that passes through the point (2, –6) is x = 2. the equation of the line perpendicular to the y-axis that passes through the point (–5, 1) is y = 1.