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STatiana [176]
3 years ago
14

Geometry math. Can someone help me out with my homework I don’t understand it.

Mathematics
1 answer:
r-ruslan [8.4K]3 years ago
7 0
For the first one x = 55
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A simple random sample of items resulted in a sample mean of . The population standard deviation is . a. Compute the confidence
damaskus [11]

Answer:

Following are the solution to this question

Step-by-step explanation:

Please find the complete question in the attached file.

In point a:

a=0.05 \\\\| Z(0.025)|= 1.96  \text{(check in normal table)} \\\\ 95 \% \  CI \\\\\bar x  \pm  \ Z \times \frac{s}{\sqrt{n}}\\\\\to 80 \pm  1.96 \times \frac{15}{\sqrt{60}} \\\\\to (76.20448, 83.79552)

In point b:

95 \%  \ CI \ is \\\\ \bar x  \pm  Z \times \frac{s}{\sqrt{n}}\\\\\to  80 \pm 1.96 \times \frac {15}{\sqrt{120}}\\\\\to (77.31616,  82.68384)

In point c:

A large sample is a smaller error margin.

8 0
3 years ago
What is 0.044 as a fraction in simplest form?
Mila [183]
44/1000 in simplest for is 11/250
8 0
3 years ago
Read 2 more answers
Please help!!!!!!!!!!!!
vladimir2022 [97]
Use the distance formula:

x2 is 1 and x1 is -2
y2 is root7 and y1 is 0

Point (X1,Y1) is basically the coordinate of the centre point of the circle

Point (X2,Y2) is the point that on the circle

So if the point(1,root7) is on the circle, the final distance you get should be the radius of the circle, which is 4 units

Calculate it and you can get the answer that is 4

Therefore the point (1,root7) is on the circle
7 0
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9/15 + 7/15= ?<br><br><br><br><br> Pls help I’m being dumb :0
Mashutka [201]
I think the answer is 1.06666666667
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Find the volume of a right rectangular prism with a length of 3, a width of 5, and a height of 6.
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V = 3 * 5 * 6
V = 90 cubic units
3 0
3 years ago
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