Considering the situation described, the scientist's null and alternative hypothesis are described by:
Null hypothesis
; Alternative hypothesis
.
<h3>What are the hypothesis tested?</h3>
At the null hypothesis, it is tested if there is no difference, that is, the difference of the means represented by
is of 0, hence:

At the alternative hypothesis, it is tested if there is a difference, hence:

More can be learned about an hypothesis test at brainly.com/question/26454209
<u><em>Answer:</em></u>
<u><em>$55.93 or rounded up is $56</em></u>
<u><em>Division</em></u>
<u><em>First, we would divide 15.98 by 2 to see how many dollars would a bag cost.</em></u>
<u><em>15.98 divided by 2 = $7.99</em></u>
<u><em>Multiplication</em></u>
<u><em>Then, we would multiply by 7 to see how may dollars would it cost for 7 kg bag</em></u>
<u><em>7.99 times 7 = 55.93</em></u>
<u><em>Round-up</em></u>
<u><em>If we round it up, we get $56.</em></u>
<u><em>Request</em></u>
<u><em>Please give me brainliest :)</em></u>
Answer:
alternate interior angle tq