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swat32
3 years ago
7

J and k stands for two numbers.

Mathematics
1 answer:
Katena32 [7]3 years ago
8 0
2j = .5k

Let j = 5
2(5) = .5k
10 = .5k
divide both sides by .5
20 = k
When j = 5 , k = 20
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Answer:

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Information given

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\bar X =\frac{\sum_{i=1}^n X_i}{n}

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t would represent the statistic

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Hypothesis to test

We want to verify if the true mean is greater than 300, the system of hypothesis would be:      

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Replacing the info given we got:

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df=n-1=10-1=9  

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