I don't get it plz help
2 answers:
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Answer:
Let us consider the expression:
(1)
Now, the quotient of power rules says that the numbers that have same base can be find by subtracting if powers are with same sign
And adding if powers are with opposite sign.
We will solve equation (1) by this quotient of power rule.
So, it can be rewritten as:
.
Considering the given p-value, it is found that the sample does not give enough evidence that the proportion has changed.
<h3>What are the hypothesis tested?</h3>At the null hypothesis, it is tested if the proportion is still the same, that is:
At the alternative hypothesis, it is tested if the proportion has changed, that is:
.
Depends on if the p-value is less or more than the significance level:
- If it is more, the null hypothesis is not rejected.
- If it is less, it is rejected.
In this problem, the p-value is of 0.25, which is more than the standard significance level of 0.05. Hence, the null hypothesis is not rejected, which means that the sample does not give enough evidence that the proportion has changed.
More can be learned about hypothesis tests at brainly.com/question/27679258
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