If you follow the money, there was quite a bit to made if a shorter passage was found to China. The trips around the Horn and around South America were difficult and many ships were lost
Given:
unit price per pound = 21.5 cents
bought 8 pound package
find: total amount paid for 8 pound package.
We need to convert cents into dollars to avoid confusion.
21.5 cents x 1 dollar / 100 cents = 21.5 dollar / 100 = 0.215 dollars
0.215 dollars * 8 pounds = 1.72 dollars.
my answer is B. $1.72
Answers:
- a) The sample is the set of students Ms. Lee selects from the box.
- b) The population is the set of all students in Ms. Lee's classroom.
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Explanation:
The first sentence tells us what the population is: it's the set of all her students. She's not concerned with any other students in any other classroom. So her "universe", so to speak, is solely focused on this classroom only. Once the population is set up, a sample of it would be a subset of the population.
If set A is a subset of set B, then everything in A is also in B, but not vice versa. For example, the set of humans is a subset of the set of mammals because all humans are mammals. However, a dog is a mammal but not a human. This shows that A is a subset of B, but not the other way around. In this example, A = humans and B = mammals.
Going back to the classroom problem, we have A = sample and B = population. If Ms. Lee has 30 students, and she randomly selects 5 of them, then those 30 students make up set B and the 5 selected make up set A. Selecting the names randomly should generate an unbiased sample. This sample should represent the population overall. If the population is small enough, the teacher could do a census and not need a sample. Though there may be scenarios that it's still effective to draw a sample.
Answer:
Graph attached
Step-by-step explanation:
