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sladkih [1.3K]
3 years ago
11

Preimage and image points are labeled as primes.

Mathematics
1 answer:
gtnhenbr [62]3 years ago
3 0

Answer: false

Step-by-step explanation:

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An IQ test is designed so that the mean is 100 and the standard deviation is 12 for the population of normal adults. Find the sa
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Step-by-step explanation:

Given that IQ mean is 100 and std dev = 12 for normal adults

Confidence level =90%\\Z critical value = 1.645\\Margin of error = 2\\Margin of error = 1.645* std error =2\\Std error = 1.216

Std error = \frac{12}{\sqrt{n} } =1.216

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This is reasonable as this is greater than 30

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