Mr. Mann, principal at Franklin High School, wondered if the students at his school would prefer longer school days for four days a week or shorter school days for five days a week. The total number of hours spent in school would be the same in either scenario. Out of the 2,600 students enrolled in Franklin High School, Mr. Mann randomly interviewed 50 students from each of the three different grade levels. The results are compiled in the chart below:

1. Estimate the number of students out of the whole school who prefer longer days, four
days a week. Remember to create a proportion by using two ratios. Hint; sample ratio = population ratio. Remember: part/total = part/total

What might be done to increase the confidence in the estimate?

estimate = 90/150 = 6/10 students chose longer days, four  days a week.

Step-by-step explanation:

To increase the confidence, you could interview even more students.

i hope this helps, i haven't done this in school in a while!

:)

answer:

the position of equilibrium will shift to the left.

step-by-step explanation:

the general equation for the dissociation of a weak base is

b + h₂o   ⇌   bh⁺ + oh⁻

according to le châtelier's principle, when a stress is applied to a system at equilibrium, the system will respond in a way that tends to relieve the stress.

if you apply a stress by adding more bh⁺ or oh⁻,   the system will respond by moving in a direction that gets rid of the added ions.

the position of equilibrium will shift to the left, forming more of the undissociated base.

spinning a 1, 2, or 3. option d.

step-by-step explanation: when spinning a number graph up to 4, and aiming for any number less than 3, that automatically eliminates the number 4. now you have two numbers to spin on that are less than 3, but the number 3 is included in this question because it's no greater of an number than itself. i hope this you : )