PLEASE HELP How do you think cell phones affect attention in class? Describe an experiment you could perform to test your hypothesis. Include your hypothesis, operational definitions of your independent and dependent variables, who your participants would be, and how you would randomly assign them to experimental or control groups.

well you could have a test group where they don't have phones(independent variable or control group) and students (of any age) who have.

but the dependent variable (or the one being changed) is the test grades of students. measure the grades of the students with-out phones and ones who have phone.

Explanation:

if all goes correctly, the average of the people who use phones should be relatively lower than students who do not have phones (never mentioned range because some students can have the highest grade out of all the control group and still have a phone)

for this case, we must find the number of deaths per day of the year 2015, in automobile accidents, knowing that 32,400 people died.

knowing that the year 2015 had 365 days we have the following division:

where "x" represents the number of deaths per day.

rounding off we have:

approximately, 89 people per day died in 2015

answer:

89 people per day

i need with the same thing