Abicycle store installs about 400 tires per day. tires are installed monday through friday for 8 hours per day. the owner of the store estimates the number of properly installed tires per week using the process below.

in the first hour of work on monday, 49 out of 50 tires were properly installed.

so, there were about 8(49) = 392 properly installed tires on monday.

considering 5 working days per week, 5(392) = 1,960 is the number of tires properly installed in one week.

which best explains the validity of the results?
the results are likely invalid because it is unlikely that the tires installed in one hour on monday will represent the entire population of tires.
the results are likely invalid because the entire population during one week was not part of the sample.
the results are likely valid because a large number of tires produced during the week were part of the sample.
the results are likely valid because each tire sampled was part of the population of tires that week.

A bicycle store installs about 400 tires per day. Tires are installed Monday through Friday for 8 hours per day. The owner of the store estimates the number of properly installed tires per week using the process below.

In the first hour of work on Monday, 49 out of 50 tires were properly installed.  

So, there were about 8(49) = 392 properly installed tires on Monday.

Considering 5 working days per week, 5(392) = 1,960 is the number of tires properly installed in one week.

Which best explains the validity of the results?

The results are likely invalid because it is unlikely that the tires installed in one hour on Monday will represent the entire population of tires.

The results are likely invalid because the entire population during one week was not part of the sample.

The results are likely valid because a large number of tires produced during the week were part of the sample.

The results are likely valid because each tire sampled was part of the population of tires that week.

Step-by-step explanation:

the camry sales+accord sale=828,000. to make it so the two numbers are 18 thousand apart and still equal 828,000, you first need to find out what half of 828,000 is. 828,000/2=414,000. for the two numbers to equal 828,000, you have to add the same amount as you subtract from the middle. in this case, the number is 9,000 because it's half of 18,000. to equal 828,000, you have to add 9,000 to 414,000 for the camry and subtract 9,000 from 414,000 for the accord. 414,000+9,000=423,000.

414,000-9,000=405,000.

423,000+405,000=828,000.

423,000-405,000=18,

hope it