Question 1 3 pts
An independent random sample is selected from an approximately normal population with an unknown
standard deviation. Find the p-value for the given sample size and test statistic (assume one-sided), n-11,
T-1.91. Round to three places. If using R, use the following command: pt(t-value, degrees of freedom).

1/4 because there is 4 grades.

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

47

step-by-step explanation:

the answer is a) y= 2 csc [0.5 (x+pi/2)]-1

step-by-step explanation: