Answer:
A
Step-by-step explanation:
distance increases by 2mph
Answer:
n = 100 scores from a population with σ = 20
Step-by-step explanation:
The Central Limit Theorem estabilishes that, for a random variable X, with mean 
and standard deviation 
, the sample means with size n can be approximated to a normal distribution with mean and standard deviation, which is also called standard error, of 
n = 5 scores from a population with σ = 20
n = 5 scores from a population with σ = 80
n = 100 scores from a population with σ = 20
.
This one is the correct answer.
n = 100 scores from a population with σ = 40
.
Given the data above N=8
mean is (12+10+11.5+11.5+12+9+9+11)/8
thus, mean = 10.75
Sample standard, s= √(∑(x-m)²)/(n-1)
= 1.172
I therefore, believe that the best approximation of standard deviation is 1.17
Answer:
x = 9
Step-by-step explanation:
Given
6(x - 3) = 3x + 9 ← distribute left side
6x - 18 = 3x + 9 ( subtract 3x from both sides )
3x - 18 = 9 ( add 18 to both sides )
3x = 27 ( divide both sides by 3 )
x = 9
B,D, E
B because 11*26=286 and 1*11=11
D because 5*26=130 and 1*5=5
E because 26*.25=6.5 and 1*.25=.25
It isnt a or c because 1:26 does not equal 26:1
