Answer:
Step-by-step explanation:
Given that x = no of movies high school students watched is N(6.8, 1.8)
Sample size = 36 and hence std error = 1.8/6 = 0.3
(two tailed test)
Mean difference = 6.2-6.8 = -0.6
Test statistic z = -0.6/0.3= -2
p value = 0.02275
Since p <0.05 we reject H0.
There is evidence to show that college students watch fewer movies a month than high school students
X will represent the larger number, and y the smaller
x - y = 22 —> x = 22 + y
x = 2 + 2y
22 + y = 2 + 2y
y = 20
x = 22 + 20
x = 42