Answer:
A. The distribution should be skewed to the left because the mean is less than the median.
B. Most students scored a C or higher.
Step-by-step explanation:
A. Since mean<median<mode, we have a negative skewness and hence the distribution is skewed to the left.
B. Since the mean score is 71 and the modal score is 81, it is expected that a 'C' should be the lowest grade most students will have.
Answer:
32
Step-by-step explanation:
(a+b)²=a²+2ab+b²=(a²+b²)+2ab=16+2*8=32
Answer:
C
Step-by-step explanation:
Answer:
w= 8
Step-by-step explanation:
180-90= 90
(5w + 1) + (7w- 7) = 90
solve
w= 8
Answer:
Cm
Step-by-step explanation:
The areas are in sq. cm
