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Black_prince [1.1K]
3 years ago
5

PLEASE HELP!

Mathematics
1 answer:
Orlov [11]3 years ago
3 0
We have that
<span>If (5x-4+13x=5) -------------->  then x=1/2
Step 1
</span>let's substitute the value of x = (1/2) in the expression [5x-4+13x] and verify its result
5*(1/2)-4+13*(1/2)
(5/2)-4+(13/2)
(5-4*2+13)/2----------> (5-8+13)/2=10/2=5
then 
5=5-----------> <span>the value of x = (1/2) satisfies equality</span>


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\bar X represent the sample mean

s represent the standard deviation for the sample

n sample size      

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\alpha represent the significance level for the hypothesis test.    

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p_v represent the p value for the test (variable of interest)  

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Alternative hypothesis:\mu > 20      

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First we need to calculate the degrees of freedom given by:  

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p_v =P(t_{25}>-0.6)=0.723  

So since the p value is higher than the significance level pv>\alpha we FAIL to reject the null hypothesis.

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