2 years ago

Please help me worth a bunch of points 26 points

Mathematics

2 answers:

Maru [420]2 years ago

6 0

Answer:

Step-by-step explanation:

ok up down too

Romashka [77]2 years ago

3 0

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Step-by-step explanation:

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Standard deviation : $\sigma = \text{2.4 in}$

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$z=\dfrac{x-\mu}{\dfrac{\sigma}{\sqrt{n}}}$

a) Sample size = 1

For x= 63 in. ,

$z=\dfrac{63-62.3}{\dfrac{2.4}{\sqrt{1}}}=0.29$

The p-value = $P(z$

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Thus, the probability is approximately = 0.6141

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For x= 63 ,

$z=\dfrac{63-62.3}{\dfrac{2.4}{\sqrt{47}}}\approx2.0$

The p-value = $P(z$

$=0.9772498\approx0.9772$

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