The mean of people in the sample of households of 7th-grade students is 4.3. the mean of people in the sample of households for 8th-grade students is 4.5. what might principal coleman infer or predict about the entire population based on the data?

The mean of something is the "average"

For example, if the mean of people in the households of 7th-grade students is 4.3, this means that if you go to a random house of a 7th-grade student, you can expect around 4 people in there.

Now, for the  7th-grade students, the mean is 4.5, just a 0.2 bigger. (This means that, on average, there is more people in the 8th-grade student's households)

So Principal Coleman can infer that the amount of people in the households of  7th-grade students and 8th-grade students is almost the same, wherein the 8th-grade students there is a small chance of finding more people, but this difference is almost depreciable.

45

step-by-step explanation:

30+15

13664

step-by-step explanation:

=cross multiply

=100 x = 13664