3 years ago

I just need the answer to this !!

Mathematics

1 answer:

Romashka-Z-Leto [24]3 years ago

7 0

Answer:

:))))))))))))))))))

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Need help with this problem. Help me please!

tangare [24]

The answer would be 95

7 0

3 years ago

Read 2 more answers

1) A school has 1600 students and they are going to vote as to whether they will completely convert the school completely off fo

fredd [130]

Answer:

Standard deviation of the students = 0.408

The students would you have to poll to be 95% confident of the outcome within /- 2% of the vote

= 0.408 X 1600

= 652.8

Step-by-step explanation:

<u><em>Step(i):</em></u>-

Given sample size 'n' = 1600

95% confidence interval of the margin error is determined by

$M.E = \frac{Z_{0.05} S.D}{\sqrt{n} }$

Level of significance = 0.05

Z₀.₀₅ = 1.96

Given Margin of error = 2% = 0.02

$M.E = \frac{Z_{0.05} S.D}{\sqrt{n} }$

$0.02 = \frac{1.96 X S.D}{\sqrt{1600} }$

0.02 X √1600 = 1.96 X S.D

$S.D = \frac{0.02X\sqrt{1600} }{1.96} = 0.408$

Standard deviation of the students = 0.408

The students would you have to poll to be 95% confident of the outcome within /- 2% of the vote

= 0.408 X 1600

= 652.8

5 0

3 years ago

The original price of a watch was $109.it was on sale for 100.28.what was the discount rate

Romashka-Z-Leto [24]

$\$109-\$100.28=\$8.72\\\\\frac{\$8.72}{\$109}=\frac{8.72}{109}\cdot100\%=\frac{872}{109}\%=8\%\leftarrow answer$

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3 years ago

What divided by five is seven

bagirrra123 [75]

The answer would be 35

5 x 7 = 35

5 0

3 years ago

Read 2 more answers

What is the distance between 3, 5 and -4, 1

USPshnik [31]

Answer:

Distance = 8.06

Step-by-step explanation:

We have to use the distance formula $d=\sqrt{(x_{2}-x_{1})^{2} +(y_{2}-y_{1})^{2} }$ .

$(x_{1},y_{1}) =$ coordinates of the first point

$(x_{2},y_{2} ) =$ coordinates of the second point

To solve, plug the appropriate values into the formula.

$d=\sqrt{(-4-3)^{2} +(1-5)^{2} } = \sqrt{65} = 8.062257748$

5 0

3 years ago