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DaniilM [7]
4 years ago
13

Please help me with this question!

Mathematics
1 answer:
KatRina [158]4 years ago
7 0

Answer:

B

Step-by-step explanation:

64.12 is closer to 63 and 7.47 is closer to seven hope i helped you!

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A sample of 100 footballs showed an average air pressure of 13 psi. The standard deviation of the population is known to be .25
Vladimir79 [104]

Answer:

0.025 is the standard error of mean.

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 100

Sample mean = 13 psi

Population standard deviation = 0.25 psi

We have to find the standard error of the mean.

Formula:

Standard error =

\dfrac{\sigma}{\sqrt{n}} = \dfrac{0.25}{\sqrt{100}} = \dfrac{0.25}{10} = 0.025

0.025 is the standard error of mean.

7 0
4 years ago
Please show me how to do this ? Thank you :)
Bumek [7]

Answer:

<h2>2 c. = 1 pt.</h2><h2>2 pt. = 1/4 qt.</h2><h2>1 gal. = 4 qt.</h2><h2>4 qt = 1 gal.</h2>

Step-by-step explanation:

\boxed{1gal.=4qt.=8pt.=16c}\\\\1pt.=2c.\Rightarrow 2c.=1pt.\\\\1qt.=8pt.\to1pt.=\dfrac{1}{8}qt.\Rightarrow2pt.=2\cdot\dfrac{1}{8}qt.=\dfrac{1}{4}qt.\\\\1gal=4qt.\Rightarrow4qt.=1gal.

7 0
3 years ago
Robert is building model cars as well as model trains. The cars take 4 hours to build while the trains take 6 hours
Darina [25.2K]

10 cars and 10 trains in 100 hours

it approximately take him 10 hours to build one car and one train how 6+4=10 how many times can 10 go into 100 10 times hope this helps a little

4 0
3 years ago
A line contains the points (30, 1) and (39, 4). Find the slope of the line?
satela [25.4K]

Answer:

Rise/Run

4-1/39-30

3/9

<u>1/3 Is the slope</u>

3 0
3 years ago
Read 2 more answers
Explain the difference between a well defined set and a set that is not well defined. Give examples.
yuradex [85]

Answer:

Step-by-step explanation:

A well defined set is one which is universally defined and accepted, you can easily define what the set is and what is not a member of the set.example is a set of integers between 1 and  30

A not well defined set is one which is ill defined set. example is a list of hit musical hit of 2019

6 0
4 years ago
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