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r-ruslan [8.4K]
2 years ago
8

Joan wants to estimate the average number of people who purchase breakfast on flights between two cities. She decides to randoml

y select 10 flights from all available data in the past year and use all the purchasing records from these flights in order to estimate the average. What type of sampling is Joan using?​
Mathematics
1 answer:
Lubov Fominskaja [6]2 years ago
8 0

The sampling that Joan is using is known as cluster sampling.

<h3>What is sampling?</h3>

It should be noted that sampling simply neans when a sample of a population is taken in order to illustrate the characteristics of the entire population.

In this case, the sampling that Joan is using is known as cluster sampling. This was depicted as she randomly select 10 flights from all available data in the past year.

Learn more about sampling on:

brainly.com/question/17831271

#SPJ1

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Represent the complex number graphically, and find the trignometric form of the number. 1 + 3i
nevsk [136]

The trigonometric form of the complex number 1 + 3i is 3.16[cos(71.57)° + isin(71.57°)]

<h3>What is an equation?</h3>

An equation is an expression that shows the relationship between two or more numbers and variables.

Complex number is in the form z = a + bi, where a, b are real numbers.

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The trigonometric form of the complex number 1 + 3i is 3.16[cos(71.57)° + isin(71.57°)]

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7 0
1 year ago
For a popular broadway musical, the theater box office sold 356 tickets at $80 apiece, 275 tickets at $60 apiece, and 369 ticket
Rudik [331]
It's is $61 585 because all you have to do is mulitiply 356 by $80, 275 by $60 and 369 by $45
356 x 80 = 28 480 275 x 60 = 16 500
369 x 45 = 16 605
Add the answers together

28 480. And there's your answer
16 500
+16 605
-----------
$61585
8 0
2 years ago
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