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2 years ago

Can someone help me out plz

Mathematics

1 answer:

EleoNora [17]2 years ago

3 0

Answer:

The answer is 43.52 you're welcome

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Based on the survey results from 300 selected students in the Burbank School District (BSD), the 98% confidence interval used to

Pavlova-9 [17]

Answer:

follows are the solution to this question:

Step-by-step explanation:

Please find the correct question in the attached file:

The formula for calculating the Confidence interval of proportion:

$\to CI=\hat{p} \pm Z_{\frac{\alpha}{2}} \sqrt{\frac{\hat{p}(1-\hat{p})}{n}}\\\\\to \hat{p}=\frac{\text{lower limit +upper limit}}{2}\\$

$=\frac{0.48+0.60}{2}\\\\=\frac{1.08}{2}\\\\=0.54$

The number of learners with access to working at home on a computer:

$= 0.54 \times 300 \\\\=162$

Lower limit =0.48

upper limit = 0.60

$\to margin \ error = \frac{\text{upper limit - lower limit}}{2}\\$

$=\frac{0.60-0.48}{2}\\\\=\frac{0.12}{2}\\\\= 0.06$

5 0

2 years ago

Solve system by elimination -9x - y =-19 <br> 5x + y = 15

vredina [299]

Answer:

(1, 10 )

Step-by-step explanation:

Given the 2 equations

- 9x - y = - 19 → (1)

5x + y = 15 → (2)

Adding the 2 equations term by term will eliminate the y- term

- 4x + 0 = - 4

- 4x = - 4 ( divide both sides by - 4 )

x = 1

Substitute x = 1 into either of the 2 equations and solve for y

Substituting into (2)

5(1) + y = 15

5 + y = 15 ( subtract 5 from both sides )

y = 10

solution is (1, 10 )

6 0

1 year ago

Giving brainlist to whoever answers

tatuchka [14]

725.95 is the answer

4 0

2 years ago

Can someone solve all dis<br> Will mark *brainiest* :)

expeople1 [14]

Answer:

the whole page????

Step-by-step explanation:

am confusion

8 0

2 years ago

Name three three decimals between 16.4 and 1

lora16 [44]

10.2
and
5.6
and
7.9

Hope this helped :)

7 0

3 years ago

Read 2 more answers