Answer :
Null Hypothesis - H0: There is no linear relationship between the weight of pinknits and the number of gogles.
Alternative Hypothesis - Ha: There is a linear relationship between the weight of pinknits and the number of gogles.
To explain the concept behind this question we first need to know about the principle of correlation.
Correlation - It is a measure of comparison of two quantities by which we compute that which two quantities are linearly equal means that if we change one quantity the other will also change at a constant rate.
This principle simply makes a relationship without causing any effect on the quantities.
Now according to the question, we can see that,
- Scientists have selected = 20 pinknits
- The scientists also measured their weights in grams
- Scientists also wanted to know if a number of gogles could be predicted using the weight of pinknits.
Therefore, from the data that scientists predicted, we can conclude that,
Null Hypothesis - H0: There is no linear relationship between the weight of pinknits and the number of gogles.
Alternative Hypothesis - Ha: There is a linear relationship between the weight of pinknits and the number of gogles.
Option 4 is correct.
To know more about Correlation,
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A group of scientists discovered a small creature at the bottom of the ocean that they called a "piknit". When this interesting creature dies, it explodes itself into a number of baby piknits called gogles. The scientists randomly selected 20 piknits from the sea-floor and measured their respective weights in grams. After the piknits died they counted the number of gogles that each piknit produced. They wanted to know if the weight of the piknits can be used to predict the number of gogles.
What are the appropriate null and alternative hypotheses?
Group of answer choices
H0: There is no linear relationship between the weight of piknits and the number of gogles
Ha: There is a negative linear relationship between the weight of piknits and the number of gogles
H0: Weight of piknits is a useful predictor for the number of gogles
Ha: Weight of piknits is not a useful predictor for the number of gogles H0: There is a linear relationship between the weight of piknits and the number of gogles
Ha: There is no linear relationship between the weight of piknits and the number of gogles
H0: There is no linear relationship between the weight of piknits and the number of gogles
Ha: There is a linear relationship between the weight of piknits and the number of gogles