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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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Step-by-step explanation:

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tiny-mole [99]

(a) a = 10.9 cm

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<u>Explanation:</u>

(a)

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(b)

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3 years ago
An astronaut with a mass of 80.70 kg is standing still on the surface of the Mars (Mars has an acceleration due to gravity of 3.
mariarad [96]

Answer:

Force, F = 68.93 pounds

Step-by-step explanation:

Given that,

Mass of the astronaut, m = 80.70 kg

Acceleration due to gravity on Mars, a=3.8\ m/s^2

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10^6 in standard form
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