It’s b and d ? Both of those equations are the same if u haven’t noticed
Answer:
Step-by-step explanation:
add the top of one and the bottom of the other then the top of the other and the bottom of one
Answer:
a) x = 1.52
b) s = 1.16
Step-by-step explanation:
We have that:
5 students watched 0 movies.
9 students watched 1 movie.
5 students watched 2 movies.
5 students watched 3 movies.
1 student watched 4 movies.
(a) Find the sample mean x.
Sum divided by the number of students. So

(b) Find the approximate sample standard deviation, s.
Standard deviation of the sample.
Square root of the sum of the squares of the values subtracted from the mean, divided by the sample size subtracted by 1. So

4.334, just use your calculator
They both cost 10 dollars