Answer:
Area = 630/11 cm² = 57 3/11 cm²
Step-by-step explanation:
Area = (5 cm)(KN) = (6 cm)(KL)
Perimeter = 2(KN +KL) = 42 cm
So, ...
KN = 1.2·KL . . . . divide the area equation by 5 cm
1.2·KL +KL = 21 cm . . . . . divide the perimeter equation by 2
KL = (21 cm)/2.2 . . . . . . . divide by the coefficient of KL
Substituting for KL in the area equation, we have ...
Area = (6 cm)(21 cm)/2.2 = 630/11 cm²
a) The population is all of the flights belonging to the particular airline. It's not all flights in general because the airline does not have control over a rival company's flight schedule.
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b) The sample is the 5 airlines the company selected. Ideally the sample should represent the population as much as possible. The larger the sample, the more representative the sample is.
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c) No, the sample is likely <u>not</u> representative because one day of flight does not represent the entire lifetime of all flights done so far for that company. This particular day could have been a very good day with good weather, which may explain why the 5 flights were all on time.
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d) It would be better for the company to select the days at random and sample all of the flights for those particular days chosen. This is a cluster sample. Each cluster is a day. Also, I think more flights should be sampled. Five flights does not seem like enough.
Answer:
7) b
8) b
9) a
10) d
11) a
12) a
Step-by-step explanation:
Answer:
A you just didive the flour by how many serverings
is 1 in the interval
.
