X - 1 < = 6
x < = 6 + 1
x < = 7.....2nd number line is correct
Answer:
We accept H₀
Step-by-step explanation:
Normal Distribution
size sample n = 69
sample mean 18.94
standard deviation 8.3
Is a one tailed-test to the left we are traying of find out is we have enough evidence to say that the mean is less than 20 min.
1.-Test hypothesis H₀ ⇒ μ₀ = 20
Alternative hypothesis Hₐ ⇒ μ₀ < 20
2.- Critical value
for α = 0.1 we find from z Table
z(c) = - 1.28
3.-We compute z(s)
z(s) = [ ( μ - μ₀ ) / (σ/√n) ⇒ z(s) = [( 18.94 - 20 )*√69)/8.3]
z(s) = ( -1.06)*8.31/8.3
z(s) = - 1.061
4.- We compare
z(c) and z(s) -1.28 > -1.061
Then z(c) > z(s)
z(s) in inside acceptance region so we accept H₀
False. Perpendicular lines run beside each other not through each other.
351 because 293 multiplied by 3 = 879, and 1230 - 879 = 351
Answer:
6%
Step-by-step explanation:
6 divided by 100 is 0.06.
then you multiply 0.06 by 135 and that is 8.1
then add 8.1 to 135 and you get 143.1 or 143.10
