One day 6 said, "I wish I were an adult." And 1/3 came along and said, "I can do a magic flip! If I do this special flip and you're brave enough to combine our powers together we'll be 18!" 6 thought this was a brilliant idea so 1/3 flipped on his head and turned into a 3 and when 6
The quiz grades of a math class are given. 83, 76, 68, 97, 68, 80, 89, 74, 75, 81, 91, 90 The grades are normally distributed wi
Yuki888 [10]
Answer:
the answer is c) 1.08
Step-by-step explanation:
Step1:
Formula for calculating z-score is;
Z= (x-mean)/standard deviation
where x is the value for which z-score is required
Step 2:
As asked in the question z-score for highest grade is required which is 91;
z= (91-81)/9.3
z=10/9.3
z=1.075
which is approximately;
z=1.08
Yes! They are the same just flipped around.
-3.2x - 0.8 = 4.5
+ 0.8 + 0.8
-3.2x = 5.3
-3.2 -3.2
x = 1.65625