M - 30 = 10
so the number has to be 10 more than 30.
30+ 10 = m
m = 40
b
Step-by-step explanation: i don know
Answer:
10
Step-by-step explanation:
Z ^2+11=111
Z ^2=100
Z=10
Answer:
Counselor's estimate isn't correct.
Step-by-step explanation:
Total number of students in university = 30,600
2% break 3 of the languages
Therefore, 2/100 × 30600 = 612 students break 3 of the languages in the University according to the counselor.
In a random sample of 240 students, 20 break 3 of the languages.
% = 20/240 × 100 = 8.33%
SinceTotal number of students = 30,600
Therefore, 30,600/240 = 127.5
Which means 127.5 × 20 = 2550.
Which means 2550 students break 3 of the languages as against the 612 students stated by the counselor.
