Hi
(3x + 6)²
(3x + 6)(3x +6)
Distribute
(3x)(3x)+(3x)(6)+(6)(3x)+(6)(6)
9x² + 18x + 18x + 36
9x² + 36x + 36
A+ guaranteed!!!
I’m so confused. Is there any other part to the question?
Answer:a. μ = 9.667 hours
b. σ = 1.972 hours
c. SE = 0.805 hour
Sample size (n) = 6
Sample data (xi) = 10, 8, 9, 7, 11, 13
a. Mean time spent in a week for this course by students:
Sample mean is given by:
Mean time spent in a week per student is 9.667 hours
b. Standard deviation of the time spent in a week for this course by students:
Standard deviation is given by:
c. Standard error of the estimated mean time spent in a week for this course by students:
Standard error is given by:
Answer:
Option C
Step-by-step explanation:
we have
Remember that
therefore
Answer:
B
Step-by-step explanation: