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trapecia [35]
3 years ago
12

Please Help To Find That Question...

Mathematics
2 answers:
allochka39001 [22]3 years ago
6 0
V = (\pir^2) (h/3)

so ( \pi  \frac{3}{4} ^{2}  )3/3 = 1.77
kykrilka [37]3 years ago
4 0
The volume of a cone is equal to πr²*⅓h. The radius (r) of the base is ¾, and the height (h) of the cone is 3. So, ¾²π*⅓*3 simplifies to .5625π in³, or about 1.767 in³.
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iVinArrow [24]
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3 years ago
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A researcher collated data on Americans’ leisure time activities. She found the mean number of hours spent watching television e
ikadub [295]

The value of the z statistic for the considered data is given by: Option A: -3.87 approximately.

<h3>How to find the z score (z statistic) for the sample mean?</h3>

If we're given that:

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  • Sample size = n
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  • Sample standard deviation = s

Then, we get:

z = \dfrac{\overline{x} - \mu}{s}

If the sample standard deviation is not  given, then we can estimate it(in some cases) by:

s = \dfrac{\sigma}{\sqrt{n}}

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For this case, we're specified that:

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z = \dfrac{\overline{x} - \mu}{\sigma/\sqrt{n}} = \dfrac{2.3- 2.7}{0.4/\sqrt{15}} \approx -3.87

Thus, the value of the z statistic for the considered data is given by: Option A: -3.87 approximately.

Learn more about z statistic here:

brainly.com/question/27003351

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XYZ Toys makes a ec 4- Me Baby Doll for $10.40. They mark up the cost by 55%. What is the selling price for the Feed-Me Baby Dol
vladimir1956 [14]

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C = pi x d

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2 years ago
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