A high school committee wants to estimate the proportion of students that are pleased with the cleanliness of campus. They consider two methods of obtaining a sample of 400 students from the 2500 students at the school. Part A: to make the process easier, the committee consider serving the first 400 students who enter the gym during the schools first Pepper alley. Identify the type of sampling method proposed and discussed by the sampling method might be biased.

Part B: The second message the committee is contemplating involves using a random number generator app to choose a simple random sample of 400 students from a list of 2500 student names. How could they implement this method?

answer: a clock

step-by-step explanation:

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 : )

493 would be the correct answer

step-by-step explanation: