Answer:
Step-by-step explanation:
Factor the numerator and cancel common factors from numerator and denominator.
community group bought 30 tickets to an amusement park at a total cost of $810. They bought x student tickets for $25 each and y
1 answer:
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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