An English instructor asserted that students' test grades are directly proportional to the amount of time spent studying. Lisa
1 answer:
Answer:
Lisa has to study for 7.55 hours.
Step-by-step explanation:
Since an English instructor has asserted that the relation between studies and test grades is proportional then we can find the time by unitary method.
∵ To score 77 Lisa has to study for 6 hours.
∴ To score 1 Lisa has to study for =
∴ For a score of 97 Lisa has to study =
= 7.55 hours
So Lisa has to study 7.55 hours to score 97 in the test.
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Answer:
and
Step-by-step explanation:
The null hypothesis states that a population parameter (such as the mean, the standard deviation, and so on) is equal to a hypothesized value. We can write the null hypothesis in the form
In this context, the investigator's null hypothesis should be that the average total weight is no different than the reported value by the FAA. We can write it in this form .
The alternative hypothesis states that a population parameter is smaller, greater, or different than the hypothesized value in the null hypothesis. We can write the alternative hypothesis in one of three forms
The investigator wants to know if the average weight of passengers flying on small planes exceeds the FAA guideline of the average total weight of 185 pounds. He should use as his alternative hypothesis.
The equation of the line is x = 7 which is parallel to the y-axis and passes through the point (7,0)
<h3>What is a straight line?</h3>A straight line is a combination of endless points joined on both sides of the point.
The slope 'm' of any straight line is given by:
We have:
The line that is parallel to the y-axis and passes through the point (7,0)
As we know the line equation:
Parallel to the y-axis
x = c
Passes through the point (7,0)
x = 7
Thus, the equation of the line is x = 7 which is parallel to the y-axis and passes through the point (7,0)
Learn more about the straight line here:
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