Answer:
(27.3692 ; 44.6308)
Step-by-step explanation:
Mean, xbar = 36
Standard deviation, s = 11
Sample size, n = 12
Tcritical at 0.2, df = 12 - 1 = 11 ; Tcritical = 2.718
Confidence interval :
Xbar ± Margin of error
Margin of Error = Tcritical * s/sqrt(n)
Margin of Error = 2.718 * 11/sqrt(12) = 8.6308
Confidence interval :
Lower boundary : 36 - 8.6308 = 27.3692
Upper boundary : 36 + 8.6308 = 44.6308
(27.3692 ; 44.6308)
Answer:
i forgot sorry
Step-by-step explanation:
149.333333333... is your answer
Answer:
89°
Step-by-step explanation:
Ok so the measure of a triangle is 180°.
We have one angle, so we need to find m∠ACB.
A line is 180°.
180-150= 30.
m∠ACB=30°.
m∠BAC=61°.
180-(61+30)=89°
==============================================================
I hope this helps!
Have a nice day ❤
