Abicycle factory installs about 400 tires per day. tires are installed monday through friday for 8 hours per day. the manager of the factory 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.

Step-by-step explanation:

Out of 8 hours, do you really think one hour will represent it all?

This is why the resutls are likely invalid ( also I took the quiz )

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.

step-by-step explanation:

40 minutes

step-by-step explanation:

add the time and multiply by 2