All semester long you have decided that the Sapling HW is not a high priority for you. This unit you have decided to see if it makes a difference. You convince nine other friends to do the same. You all plan to compare results on this quiz where you have completed all of the Sapling HW with results of the Unit 6 Quiz where all of you decided to forget about the Sapling HW to see if the Sapling HW improved your quiz scores. Each of you will compare this through taking this quiz grade and subtracting your Unit 6 quiz grade to come up with the differences. After this you will find the mean difference. What would be the appropriate hypotheses for this study?

reduce the friction between its moving parts

step-by-step explanation:

in fact, by reducing the friction between the moving parts of the machine, it is possible to reduce the energy wasted due to this friction; therefore, more input energy is converted into useful work, and this will improve the efficiency of the machine.

step-by-step explanation:

if you want to solve percent error follow these steps.

1. subtract the accepted value from the experimental value.

2. take the absolute value of step 1.

3. divide that answer by the accepted value.

4. multiply that answer by 100 and add the % symbol to express the answer as a percentage.

if you want to solve percent of change just do this.

1. work out the difference (increase) between the two numbers you are comparing.

2. divide the increase by the original number and multiply the answer by 100. if your answer is a negative number then this is a percentage decrease.

hope this : )