The correct answer is somewhere
Answer:
Yes, it does
Step-by-step explanation:
Answer:
84.74 L
Step-by-step explanation:
22.3*3.8
estimate 22 gal *4 L/gal = 88L
so 84.74
To calculate,
22.3*3.8 = 84.74
2 for each batch.
Divide what is needed by what is in. In this case, she needs eggs, which are in nut bars.
4 / 2 = 2
2 eggs are in each nut bar.
The given data is
Scores: 90-99 80-89 70-79 60-69 50-59
Students: 3 7 12 4 4
Because we are to take the middle value for each group.
Therefore the total score is
Sx = 3*94.5 + 7*84.5 + 12*74.5 + 4*64.5 + 4*54.5 = 2245
The number of students is 3+7+12+4+4 = 30
The mean is
m =2245/30 = 74.833
Calculate (Sx - m)²
(Sx - m)² = 3*(94.5-74.833)² + 7*(84.5-74.833)² + 12*(64.5-74.833)²
+ 4*(64.5-74.833)² + 4*(54.5-74.833)² = 3896.7
Calculate the standard deviation
s = √(3896.7/29) = 11.592
Answer:
mean = 74.83
std. deviation = 11.59
