The SAT-Verbal scores of a sample of 300 students at a particular university had a mean of 592 and standard deviation of 73. According to the university's reports, the SAT-Verbal scores of all its students had a mean of 580 and a standard deviation of 110. Which of the following is a statistic? 300 592 580 110

Step-by-step explanation:

A statistic is an analysis of selected sample that is part of entire population in which the result obtained number e.g mean summarizes the sample of the population while a parameter is an analysis that the summaries the entire population e.g the 580 mean of  the entire population of students. The statistic is 592

answer: 2/4

step-by-step explanation:

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18