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2 years ago

SOMEONE PLEASE HELP ME WITH THISSS ASAP

Mathematics

2 answers:

Korvikt [17]2 years ago

6 0

Answer:

Step-by-step explanation:

Divide the numerator but the denominator to get a decimal. (That tip saved me in 6th grade)

nekit [7.7K]2 years ago

3 0

Number C is the correct answer

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In a sample of 700 gas stations, the mean price for regular gasoline at the pump was $2.894 per gallon and the standard deviati

frez [133]

Answer:

$P(x < 2.892) = 4.36\%$

Step-by-step explanation:

Given

$N = 700$ --- Population

$\mu = 2.894$ -- Mean

$\sigma = 0.009$ --- Standard deviation

$n = 55$ -- Sample

Required: $P(x < 2.892)$

This question will be solved using the finite correction factor

First, calculated the z score

$z = \frac{x - \mu}{\sqrt{\frac{N -n}{N -1}} * \frac{\sigma}{\sqrt n}}$

$z = \frac{2.892 - 2.894}{\sqrt{\frac{700 -55}{700 -1}} * \frac{0.009}{\sqrt {55}}}$

$z = \frac{-0.002}{\sqrt{\frac{645}{699}} * \frac{0.009}{7.42}}$

$z = \frac{-0.002}{\sqrt{0.92} * \frac{0.009}{7.42}}$

$z = \frac{-0.002}{0.95917 * 0.0012129}$

$z = -1.71$

So:

$P(x < 2.892) = P(z < -1.71)$

Using z table

$P(x < 2.892) = 0.043633$

$P(x < 2.892) = 4.36\%$

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Let's write it down:
<span>"60 is 75% of s" means:

60=75%*s

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60=</span><span> $\frac{3}{4}$ s

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and divide by 3:
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</span>

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GrogVix [38]

Answer:

Step-by-step explanation:

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