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grin007 [14]
2 years ago
13

Calculate the volume HELP PLEASE ASAP

Mathematics
1 answer:
jeka942 years ago
5 0
I think the formula for the volume of a cone is V=(1/3) x hπr².

r²= 9

1/3= 0.3

= 0.3 x 4 x 3.14 x 9

= 33.912
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The alternate hypothesis is:

H_{a}: \mu \neq 7.9

The test statistic is:

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

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Suppose the basketballs have a normal distribution with a standard deviation of 0.20 PSI.

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pvalue:

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z = -13.74 has a pvalue of 0.

2*0 = 0

0 < 0.05, which means that we reject the null hypothesis, meaning that the air pressure of the balls is different of the target value of 7.9.

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