<h2>
Answer with explanation:</h2>
Let p be the proportion of the correct answers.
As per given , we have
, since the alternative hypothesis is right tailed , so the test is a one -tailed test.
If the student gets 52 answers correct out of 80.
i.e. the proportion of correct answers : 
Test statistic : 
P-value : 
[ by using p-value table for z (right-tailed)]
Since the p-value(0.0037) is less than the significance level (0.05), so we reject the null hypothesis.
Results : We have enough evidence to support the claim that a student knows more than half of the answers and is not just guessing.
Answer:
-3.64h+13.68
Step-by-step explanation:
The total distance she travelled 4.1 Km.
<h3>What is unitary method?</h3>
The unitary method is a technique for solving a problem by first finding the value of a single unit, and then finding the necessary value by multiplying the single unit value.
Given:
Jessica takes a horse 3.31 kilometers
Through a motorcycle she travel 1 kilometer.
So, the total distance travelled
=3.31 + 1
=4.31 Km
Hence, the total distance they travelled is 4.31 Km.
Learn more about unitary method here:
brainly.com/question/22056199
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