Researchers doing a study comparing time spent on social media and time spent on studying randomly sampled 200 students at a major university. they found that students in the sample spent an average of 2.3 hours per day on social media and an average of 1.8 hours per day on studying. if all the students at the university in fact spent 2.2 hours per day on studying, with a standard deviation of 2 hours, the shape of the sampling distribution of the sample average time spent studying is: o normal, centered at 1.8. onormal, centered at 1.8 only if all samples have a sample average of 1.8 hours studying. o normal, centered at 2.2. normal, centered at 2.2 only if the studying times are normally distributed.

because linear equations are a lot simpler than quadratics equations, and linear equations formula is a lot easier to memorize. that's why i think they're harder.

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

the answers might not be correct use at own risk

the highest percentage for deaths in construction from highest to lowest is as follows: falls, struck by objects, electrocution, and caught-in/between. these four are collectively known as fatal four.

in the case of falls, the type that is responsible for the overall highest death in the category is falls from roofs.