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never [62]
2 years ago
14

What is the slope of the line shown above?​

Mathematics
2 answers:
Nuetrik [128]2 years ago
7 0
3 over 5 is the answer
kiruha [24]2 years ago
3 0

Answer:

3/5x is the answer

hyhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh

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Step-by-step explanation:

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a random sample of 510 high school students has a normal distribution. The sample mean average ACT exam score was 21 with a 3.2
34kurt

Answer:

CI = 21 ± 0.365

Step-by-step explanation:

The confidence interval is:

CI = x ± SE * CV

where x is the sample mean, SE is the standard error, and CV is the critical value (either t score or z score).

Here, x = 21.

The standard error for a sample mean is:

SE = σ / √n

SE = 3.2 / √510

SE = 0.142

The critical value is looked up in a table or found with a calculator.  But first, we must find the alpha level and the critical probability.

α = 1 - 0.99 = 0.01

p* = 1 - (α/2) = 1 - (0.01/2) = 0.995

Using a calculator or a z-score table:

P(x<z) = 0.995

z = 2.576

Therefore:

CI = 21 ± 0.142 × 2.576

CI = 21 ± 0.365

Round as needed.

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3 years ago
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Answer:

(-4,-1) is the answer to this.

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2 years ago
Solve the following quadratic equation for all values of xx in simplest form. 3(x+1)²-15=-12​
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Answer:

x = 0, -2

Step-by-step explanation:

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