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:
c
Step-by-step explanation:

Answer:
Fourth one
Step-by-step explanation:
12:15 p.m.
385.25 - 29 = 356.25
356.75/75 = 4.75(equivalent to 4 hours 45 minutes)
7:30 + 4:45 = 12:15 p.m.