It is said that the normal mean systolic blood pressure is 120 mm Hg with astandard deviation of 18 mm Hg. A random sample of 40 persons were taken andwas observed to have a mean systolic blood pressure of 135 mm Hg. Can weconclude that the sys-tolic blood pressure of the sample is higher than that of thepopulation at 5% level of significance?

The means and mean absolute deviations of the individual times of members on two 4x400-meter relay track teams are shown in the table below. means and mean absolute deviations of individual times of members of 4x400-meter relay track teams team a team b mean 59.32 s 59.1 s mean absolute deviation 1.5 s 245 what percent of team b's mean absolute deviation is the difference in the means? 9% 15% 25% 65%

41/17 as a decimal rounded to the nearest hundredth

Graph the following system of linear inequalities. identify at least two points in the solution: y < 5 - 2x | x + 5y > -7