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Varvara68 [4.7K]
3 years ago
11

Which angles appear to be congruent? Please help me!

Mathematics
1 answer:
KATRIN_1 [288]3 years ago
6 0
Ik that it isn’t one I think it is three and Ik it is the last one I think that is that right one
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A group of marketing students at a large university wants to determine the proportion of first year students who use certain typ
GREYUIT [131]

The required sample size is 694.

Given a student wants to make a guess within 0.03 of the true ratio with a 95% confidence level.

Margin of Error, E = 0.03

significance level α=0.05  {95% confidence}

A given estimate of the percentage of population p is p = 0.79.

The critical value for the significance level α = 0.05 is Zc = 1.96. This can be determined using either Excel or a normal probability table.

Use the following formula to calculate the minimum sample size required to estimate the percentage of population p within the required margin of error.

n≥p(1-p)(Zc÷E)²

n=0.796×(1-0.796)(1.96÷0.03)²

n=693.1016

Therefore, the  resample sizequired to meet the condition is n ≥ 693.1016 and must be an integer. From this, we conclude that the minimum sample size required is n = 694.

Learn more about confidence level from here brainly.com/question/23630128

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2 years ago
5x-7&lt;7x-11&lt;5x+9 <br> Give your answer in interval notation
skelet666 [1.2K]

Answer:

In pic below

Step-by-step explanation:

4 0
3 years ago
Reasoning The spinner is divided into eight
natka813 [3]

Answer:

Because the 8 parts are equal, there is an equal chance of landing on each part. The chance of landing on any part is 1/8. This means that it would be impossible to predict with certainty which section will be landed on, because there is an equal chance of each.

Does that help?

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Eevaluate the expression 7x, if x=11.​
Sergeeva-Olga [200]

Answer:

77

Step-by-step explanation:

Substitute the value of the variable into the equation and simplify.

5 0
4 years ago
After 6 months you have the same account balance as your friend and you have saved 280$. Write a linear equation that represents
astra-53 [7]

Answer:

y = 20x + 280

Step-by-step explanation:

The linear equation that represent your account balance is as follows:

Your friend

y = 25(6) + 250

= 400

And,

You

400 = m(6) + 280

6m = 400 - 280

6m = 120

m = 20

Now the equation of the account balance is

y = 20x + 280

Hence, the linear equation that represent your account balance is y = 20x + 280

4 0
3 years ago
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