Answer:
102 students
Step-by-step explanation:
Note that 65% and 71% are both 1 standard deviation from the mean (71%). According to the empirical rule, 68% of scores lie within 1 std. dev. of the mean.
68% of 150 students would be 0.68(150 students) = 102 students
60 I believe I hope this helps if it was right :)
Answer:
b=-3
Step-by-step explanation:
-7b=21
-7b/-7=21/-7
b=-3
-2 (-30) - 3y = 42
60 - 3y = 42
-3y = -18
y = 6
