3 years ago

Please answer these questions: are they rational or irrational numbers?

Mathematics

1 answer:

ruslelena [56]3 years ago

3 0

Answer:

they are rational numbers

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3 years ago

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Step-by-step explanation:

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3 years ago

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4 years ago

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melomori [17]

Answer:

the probability is 0.0202

Step-by-step explanation:

The computation is shown below:

Given that

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Standard deviation = 0.8 hours

Sample = 30 batteries

Sample mean = 16.7 hours

Now based on the above information

The probability is

$P (\bar x \leq 16.7) = P (\frac{\bar x - \mu}{(\frac{\sigma }{\sqrt{n} } )} \leq (\frac{16.7 - \mu}{(\frac{\sigma }{\sqrt{n} } )}\\\\= P(z\leq \frac{16.7-17}{\frac{0.8}{\sqrt{30} } } )\\\\= P(\leq -2.05)\\\\= 0.0202$

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3 years ago