1)b
2)a
Let me know if u want me to show my work
Answer:
We accept H₀ , we do not have enought evidence for rejecting H₀
Step-by-step explanation:
Normal Distribution
sample size n = 60
standard deviation σ = 15
1.Hypothesis Test : Is a one tailed-test on the right
H₀ null hypothesis μ₀ = 50
Hₐ alternative hypothesis μ₀ > 50
2.-We will do the test for a significance level α = 0,01 tht means for a 99% interval of confidence
then z(c) = 2.32
3.- We compute z(s)
z(s) = [ ( μ - μ₀ ) /( σ/√n ) ⇒ z(s) = ( 2 * √60 ) / 15
z(s) = 15.49/15 ⇒ z(s) = 1.033
4.- We compare values of z(c) and z(s)
z(s) < z(c) 1.033 < 2.32
z(s) is in the acceptance region so we accept H₀ , we do not have enough evidence for rejecting H₀
X = 2.93583423 + πn, 4.9181474 + πn
Answer:
x = <em>5</em>
Step-by-step explanation:
Add 6 to both sides.
5x - 6 + 6 = 2x + 9 + 6
Simplify
5x = 2x + 15
Subtract 2x from both sides.
5x - 2x = 2x + 15 - 2x
Simplify
3x = 15
Divide both sides by 3.
3x/3 = 15/3
Simplify.
x = <em>5.</em>
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Hope this helped!! Goodluck with your schoolwork.
