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Kruka [31]
3 years ago
9

For a survey of senior citizens, a copy of the annual city census is obtained, and 30,000 residents 65 years of age and older ar

e identified. A total of 400 seniors is selected, of whom 250 are interviewed. There are __________ senior citizens in the sampling frame.
Mathematics
1 answer:
zalisa [80]3 years ago
4 0

Answer: The sampling frame is 400 and the sample 250.

Step-by-step explanation:

The sampling frame is a list of elements used to determine the samples. The sampling frame contains 400 senior citizens of which 250 samples were interviewed.

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

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Group the given equations into two based on observed common properties.

Equations

n²-3n+10=0

8-3k=12

2y-z=9

2x²+2x+1=0

25b²-16=0

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5w+5=0

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6 0
1 year ago
The size of the angle of a triangle are are in the ratio 2:4:9 calculate the size of the three angles in degree
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In short, Your Angles would be: 24, 48 & 108

Hope this helps!
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1 13/24 and that's it

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