3 years ago

Can anyone tell me 1/3 divided by 1/9

Mathematics

1 answer:

Hunter-Best [27]3 years ago

3 0

Your answer is 3 my friend.

K eep the first fraction

C change the division sign to multiplication

F flip the fraction upside down (reciprocal)

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Answer:

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Step-by-step explanation:

From the question we are given that

The population mean is $\mu = 149$

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The probability that the sample mean would be greater than $P(\= X > x ) = P( \frac{ \= x - \mu }{\sigma_{\= x} } > \frac{ x - \mu }{\sigma_{\= x} } )$

Generally the z- score of this normal distribution is mathematically represented as

$Z = \frac{ \= x - \mu }{\sigma_{\= x} }$

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substituting values

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$P(\= X > x ) = P( Z > \frac{ 147.81 - 149 }{ 1.492} )$

$P(\= X > x ) = P( Z > -0.80 )$

Now from the z-table the probability is found to be

$P(\= X > x ) = 0.78814$

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