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Katyanochek1 [597]
3 years ago
6

I am getting ready for my GED test. What is 3 is 0.2 percent of what number?

Mathematics
1 answer:
Sphinxa [80]3 years ago
8 0
3 = (0.2/100)x
3 = 0.002x 
x = 3/0.002
<span>x = 1500
</span>Ans=1500
             Good Luck on your test :D 
             P.S please give me branliest and a rating
              (ノ◕ヮ◕)ノ*:・゚✧ ✧゚・: *ヽ(◕ヮ◕ヽ)
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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

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1 
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