The number of standard deviation from the mean Round your an

The number of standard deviation, from the mean. Round your answer to two decimal place. The number of hours per day a college student spends on homework has a mean of 4 hours and a standard deviation of 0.75 hours. Yesterday she spent 2 hours on homework. How many standard deviations from the mean is that?

Solution

chegg\'s policy allow me to answer 1 question per post

I can gladly help you with all your question but you should post it in a new question

6)

to find how many SD from the mean is we just need to do a division

2 / 0.75 = 2.67

so there are 2.67 SD below the mean

is below because 2 is below to 4 that is the mean