SOLUTION: Find the p-value for the following hypothesis test. H0: μ≥20, H1: μ<20, n=80, x¯=18.75, σ=4.5

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Question 1162324: Find the p-value for the following hypothesis test.

H0: μ≥20, H1: μ<20, n=80, x¯=18.75, σ=4.5
Answer by Edwin McCravy(20077)   (Show Source): You can put this solution on YOUR website!

On your TI-84 calculator,

Press stat, then the right arrow key twice to highlight TESTS

press enter

See this, and type in these values

         Z-Test
Inpt:Data Stats    <--highlight Stats
µ0:20
x̄:18.75
n:80
µ:≠ <µ0 >µ0    <--highlight <µ0    
Color:  BLUE
Calculate Draw       <--highlight Calculate

µ<20
z=-2.484519975
p=0.0064863228        <--THE ANSWER 
x̄:18.75
n=80

Edwin
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