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Harlamova29_29 [7]
3 years ago
7

What happens to the interval as the level of confidence is​ changed? Explain why this is a logical result.

Mathematics
1 answer:
Elan Coil [88]3 years ago
6 0

Answer with explanation:

A x% confidence interval interprets the percentage of certainty that a person can believe that the true population parameter.

It is also represented as Point estimate ± Margin of error

Confidence level is proportional to the Margin of error.

  • As confidence level increases the error bound increases that makes the confidence interval broader.
  • As confidence level decreases the error bound decreases , making the confidence interval narrower.
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What is the slope of the graph y = -25x - 42?​
sweet [91]
-25x is the slope
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5 0
3 years ago
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Which statement is true about the extreme value of the given quadratic equation?
ICE Princess25 [194]

Answer:

Option B.  The equation has a maximum value with a y-coordinate of -21.

Step-by-step explanation:

The correct quadratic equation is

y=-3x^{2}+12x-33

This is a vertical parabola open downward (the leading coefficient is negative)

The vertex represent a maximum

Convert to vertex form

Factor -3

y=-3(x^{2}-4x)-33

Complete the square

y=-3(x^{2}-4x+2^2)-33+12

y=-3(x^{2}-4x+4)-21

Rewrite as perfect squares

y=-3(x-2)^{2}-21

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therefore

The equation has a maximum value with a y-coordinate of -21

3 0
3 years ago
Write and solve a system of equations for the situation described below. Define your variables and write your solution as a sent
Delicious77 [7]
N = nickels and q = quarters

0.05n + 0.25q = 1.90
n = 2q + 3

0.05(2q + 3) + 0.25q = 1.90
0.10q + 0.15 + 0.25q = 1.90
0.10q + 0.25q = 1.90 - 0.15
0.35q = 1.75
q = 1.75/0.35
q = 5 ......there are 5 quarters

n = 2q + 3
n = 2(5) + 3
n = 10 + 3
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6 0
3 years ago
is the degree of ( f+g)(x) equal to the degree of f(x) or g(x) , which ever has the highest degree ?​
Virty [35]

Answer:

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Step-by-step explanation:

7 0
3 years ago
ADD together all the numbers greater than 0.7, in the following list . check your answer by adding the numbers together in a dif
sertanlavr [38]

Answer: 15.28

Step-by-step explanation: I just added them together

6 0
4 years ago
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