Answer:
Multiple Answers
Step-by-step explanation:
We know that the mean is 35 and the median is 31.2 hours.
- Step 2: If we clear n of the percentil formule of the 6th percentile:
(n)()= 24 families → n=400 families.
- Step 3: true. The half of the population is 200. Therefore the 50% of the sample(the 50th percentile) is under or equal 31.2
- Step 4: By definition the median is the 50th percentil. So the 50 percentil → 31.2.
- Step 1: If we considerate that the 50th percentil is 31.2, a bigger percentil had to be bigger too.
- Step 5: False. At the beggining we have that the 6% of the population were below or equal to 20 hours, therefore the 25% of the data have to be greater or equal to 20.
Answer:
0%=0, 100%=172
Step-by-step explanation:
Combine like terms.
2x + 6 + 6x - 1
8x + 5
Answer:
49
Step-by-step explanation:
Let Thomas's age=x, so Huilan's age = x-11;
x+(x-11)=87
2x=98
x=49
so, Thomas's age is 49