3 years ago

What is the volume of sphere with a 10 inch radius?

Mathematics

2 answers:

Anarel [89]3 years ago

8 0

The answer is 4188.79 inches

Ede4ka [16]3 years ago

5 0

It is about 4188.79 inches cubed, or 1,333 1/3 pi cubed
hope this helps:)

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1/8 multiplied by 4 2/3

Anna35 [415]

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beks73 [17]

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blsea [12.9K]

Answer:

We conclude that the Pennsylvania school district have an IQ higher than the average of 101.5

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 101.5

Sample mean, $\bar{x}$ = 106.4

Sample size, n = 30

Alpha, α = 0.05

Population standard deviation, σ = 15

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 101.5\\H_A: \mu > 101.5$

We use one-tailed z test to perform this hypothesis.

Formula:

$z_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }$

Putting all the values, we have

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Now, $z_{critical} \text{ at 0.05 level of significance } = 1.96$

Since,

$z_{stat} > z_{critical}$

We reject the null hypothesis and accept the alternate hypothesis.

Thus, we conclude that the Pennsylvania school district have an IQ higher than the average of 101.5

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Answer:

Step-by-step explanation:

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