Answer:
D
Step-by-step explanation:
Answer:
4z - 15
4(3) - 15
12 - 15
= -3
High school math? really?
Answer:its 3
Step-by-step explanation:
Answer:
4
Step-by-step explanation:
Add each sample separately
A.17 B. 47 C. 39 D. 52 E. 45
Then you add them all together which totals 200 sick days
We know that they surveyed 5 schools and 10 students at random from each one. So we want to know the mean of sick days the students took not the schools in all.
So we divide 200/50
And get a mean of 4.
So each student took an average of 4 sick days each in the country.
