Answer:
Yes, this is a valid inference because she took a random sample of the neighborhood.
Step-by-step explanation:
As her survey was non bias and completely random and she found that 15% of the families would participate in the event. She claims that 15% of the neighborhood families would be expected to participate in the sports event. So, yes, this is a valid inference because she took a random sample of the neighborhood.
Answer: 2000000
Step-by-step explanation:
10^4 times 5 times 10^2 =10^6 times 5
5 times 10^6= 5000000
5000000/2.5
=2000000
Answer:
9 seconds
Step-by-step explanation:
3 feet per second divided by 21 feet which is 9
