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
Answer:
i think 2. is : 1and 3. is
Step-by-step explanation:
Answer:
A) Leg
Step-by-step explanation:
In a right triangle, the side that is opposite of the right angle is the hypotenuse. It is also the longest side of the triangle.
Since side 'a' makes up a right angle and it's a shorter piece, it is a leg of the triangle.
Hope this helps.
The answer would be 18 units I believe
2(7+2)
2(9)
18 units
