Answer:
a) the mean is $53.50
b) it is a statistic
Step-by-step explanation:
mean = ∑fx/∑f
∑f = 20
mean = (sum of the terms) ÷ (number of terms)
mean = (53+49+54+50+21+46+75+45+63+76+61+63+36+34+54+63+37+62+66+62) ÷ 20 = 1070/20
=$53.50
b) it is statistics because it is a random sample of 20 residential customers not the actual population
Answer:
m<10 = 65°
Step-by-step explanation:
I. Given m<18 = 46deg, m<13 = 69deg and m<10 = x
The degree is less than 90deg, so this triangle is acute triangle.
Sum of degree inside of triangle is 180°
So 46 + 69
= 115
Find x by
180 - 115 = 65
So m<10 = 65°
Hope that help :)
Answer:
25
Step-by-step explanation:
Its just 25
The tectonic plates shifting in the water causing waves, the moon's gravitational pull also has an affect on water which causes the high tide and low tide