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Liono4ka [1.6K]
3 years ago
8

An SRS of 18 recent birth records at the local hospital was selected. In the sample, the average birth weight was 119.6 ounces a

nd the standard deviation was 6.5 ounces. Assume that the population of birth weights of all babies born in this hospital follow a Normal distribution, with mean μ.
The standard error of the mean is
A. 6.50.
B. 1.53.
C. 0.36.
D. 0.02.
Mathematics
1 answer:
Crazy boy [7]3 years ago
8 0
The standard error of the mean is the standard deviation which is 6.50
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5.1% < 0.51 please help been working on this all day I really need help
WITCHER [35]
You can write any decimal as a precent by moving the decimal 2 places to the right so 
0.51 = 51%
5.1% < 51%
5.1% < 0.51

or, any precent can be written as a decimal by moving the decimal points two point to the left so
5.1% = 0.051
0.051 < 0.51
5.1% < 0.51

7 0
3 years ago
What is<br> |Ay|<br> in the system of linear equations below?<br><br> -8x+y=-6<br> 3x-2y=-1
Anna71 [15]

Considering the given system of equations, it is found that:

|Ay| = \left|\begin{array}{cc}-8&1\\-6&-1\end{array}\right|

<h3>What is a system of equations?</h3>

A system of equations is when two or more variables are related, and equations are built to find the values of each variable.

In this problem, the system is:

-8x+y=-6

3x-2y=-1

In matrix form, it is given by:

\left[\begin{array}{cc}-8&1\\3&-2\end{array}\right]\left[\begin{array}{c}x\\y\end{array}\right] = \left[\begin{array}{c}-6\\-1\end{array}\right]

To find the matrix |Ay|, we replace the y coefficients of 1 and -2 by the results of -6 and -1, hence:

|Ay| = \left|\begin{array}{cc}-8&1\\-6&-1\end{array}\right|

More can be learned about a system of equations at brainly.com/question/24342899

6 0
2 years ago
7 Mega Middle School had a Valentine
Alex73 [517]

Answer:

600 students attend the school.

Step-by-step explanation:

495-7=488

488/4=122

488+122= 600

8 0
3 years ago
Marking Brainliest when it allows me to, right answers.
suter [353]
He earned 200 more dollars the 6th year than the 5th year
6 0
2 years ago
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What is the value of x 3/5x-1/3x=x-1
Stella [2.4K]

Answer:

x=15/11

or

x=1.36

Step-by-step explanation:

8 0
3 years ago
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