The answer is B i just asked somebody the same question
Answer:
Yes, it is a valid random sample for if I were to randomly survey 50 people from the phone books of 20 randomly chosen cities.
Step-by-step explanation:
Because a random sample, means, the following: a subset of a statistical population in which each member of the subset has an equal probability of being chosen. And the randomly survey 50 people from the phone books of 20 randomly chosen cities matches this meaning.
A pattern is a recurring arrangement of numbers, forms, colours, and so on.
<h3>What is a pattern?</h3>
In mathematics, a pattern is a recurring arrangement of numbers, forms, colours, and so on. The Pattern may be applied to any form of event or object. A pattern is defined as a group of integers that are connected to each other in a specified way.
As per the pattern, Each figure has 3 more squares than the one before it.
Hence, the correct option is C.
Learn more about Pattern:
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Answer:
First box: 18
Second box: 40.5
Third box: 45
Step-by-step explanation:
9 km/m
1) the probability of drawing a white marble is 1 out of 9. purple is 8out of 9
2) the probability of drawing two white marbles is 2out of 9
3) two purple because every time you draw if you put it back in the probability doesn't change