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3 years ago

F4f fendimulatto juicyminkz

Mathematics

1 answer:

lapo4ka [179]3 years ago

7 0

Answer:

....................

Step-by-step explanation:

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The ratio of girls to boys in the sixth grade is 2:5. If there are a TOTAL of 280 students in the sixth grade, how many of the s

Lapatulllka [165]

Answer:

hope it helps you

this is my answers

5 0

3 years ago

A group of 59 randomly selected students have a mean score of 29.5 with a standard

algol [13]

Answer:

$29.5-1.671\frac{5.2}{\sqrt{59}}=28.37$

$29.5+1.671\frac{5.2}{\sqrt{59}}=30.63$

And we can conclude that the true mean for the scores are given by this interval (28.37; 30.63) at 90% of confidence

Step-by-step explanation:

Information given

$\bar X = 29.5$ represent the sample mean

$\mu$ population mean

s= 5.2 represent the sample standard deviation

n=59 represent the sample size

Confidence interval

The confidence interval for the true mean is given by the following formula:

$\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}$ (1)

The degrees of freedom are given by:

$df=n-1=59-1=58$

The Confidence interval is 0.90 or 90%, the significance is $\alpha=0.1$ and $\alpha/2 =0.05$ , and the critical value is $t_{\alpha/2}=1.671$

Now we have everything in order to replace into formula (1):

$29.5-1.671\frac{5.2}{\sqrt{59}}=28.37$

$29.5+1.671\frac{5.2}{\sqrt{59}}=30.63$

And we can conclude that the true mean for the scores are given by this interval (28.37; 30.63) at 90% of confidence

8 0

3 years ago

Ill give a brainliest

Mekhanik [1.2K]

Answer:

it would be 10

Step-by-step explanation:

so this is how the table would look bc i can't explain well-

sugar flour

2 3

4 6

6 9

8 12

10 15

don't forget to charge ur computer and i hope this helps!

3 0

3 years ago

Read 2 more answers

Find 2 positive real numbers that differ by 1 and have a product of 1

velikii [3]

A) x -y =1
B) x * y =1
B) y = 1/x

A) x -(1/x) = 1
Multiplying both sides by "x"
A) x^2 -1 = x
A) x^2 -x -1 = 0

Solving by the quadratic formula
x = 1.618 and
y = .618

Interestingly, the number 1.6180339... is called the "phi ratio" or the "golden ratio".
https://en.wikipedia.org/wiki/Golden_ratio

6 0

3 years ago

How to write seventeen thousand and one hundred six thousandths in standard form

WINSTONCH [101]

Seventeen-thousand and one hundred 6 thousandths written in standard form would be 17,000.106

Hope this helped =)

3 0

3 years ago

Read 2 more answers