Which method of data collection would you use to collect data for the following studies: observational study
survey
A study of the number of hou v
[Choose
A study of the Algebra 1 EOC scores of students in the 7th grade in Florida.
control representation
A study of the effects of extended phone time on a subject's quality of sleep.
replication
A study of the number of hours a middle school student spends on digital devices.
experiment
[Choose ]

Plzzz i beg u so much asaaaap ! what is the slope of this line? enter your answer in the box.

1. if we have 3 babies what is the probability they’re going to be all boys? 2. if we roll 2 die at the same time what is the probability of getting less than 10 on the first roll and a 5 on the second roll 3. if we have 3 babies what is the probability their is going to be 2 girls? 4. if we have 3 babies what is the probability of having no more than 1 girl? 5. it we have 3 babies and then have another 3 babies what is the probability of us having at least 1 boy and then having all girls?

Find the magnitude, correct to two decimal places, made by each of the following with positive direction of the x axis a) y= x the answer is 45° but i don’t know how