Answer:
57/6 or 9 1/2.
Step-by-step explanation:
The lowest common denominator is 12 so we convert the fractions to denominator 12:
29/12 + 23/6 + 11/3 - 5 / 12
= 29/12 + 46/12 + 44/12 - 5/12
= 114/12
= 57/6
or 9 1/2
Answer:
RO
Step-by-step explanation:
Margin of error, e = Z*SD/Sqrt (N), where N = Sample population
Assuming a 95% confidence interval and substituting all the values;
At 95% confidence, Z = 1.96
Therefore,
0.23 = 1.96*1.9/Sqrt (N)
Sqrt (N) = 1.96*1.9/0.23
N = (1.96*1.9/0.23)^2 = 262.16 ≈ 263
Minimum sample size required is 263 students.
