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3 years ago

What is the formula for the confidence interval? Then, define what each variable represents.

1 answer:

7 0

The confidence interval for a (1−α)% confidence level is given by

(θ0−Zα/2 σ/√n, θ0+Zα/2 σ/√n)

θ0 is the measured statistic, Zα/2 is the cutoff/critical value, and σ/√n is the standard error. σ is the population standard deviation (if known) or can be estimated by a sample standard deviation. n is the sample size. The cutoff value depends on the test you wish to use, and θ0 depends on the statistic you wish to estimate.

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Roman55 [17]

Answer:

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Step-by-step explanation:

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3 years ago

Help! Find the domain of the graph

charle [14.2K]

Answer:

[-8,4]

Step-by-step explanation:

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3 years ago

Wright an inequality for the graph

Lerok [7]

Answer:

Y >= ABS(x-5) + 1

Step-by-step explanation:

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3 years ago

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AleksandrR [38]

Since both values are positive, it is in quadrant 1

6 0

3 years ago

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kykrilka [37]

By knowing the blood pressure and applying the quadratic formula, the age of a man whose normal blood pressure is 129 mm Hg is 40 years old.

<h3>How to use quadratic equations to determine the age of a man in terms of blood pressure</h3>

In this problem we have a quadratic function that models the blood pressure as a function of age. As the latter is known, we must use the quadratic formula to determine the former:

129 = 0.006 · A² - 0.02 ·A + 120

0.006 · A² - 0.02 · A - 9 = 0

$A = \frac{0.02 \pm \sqrt{0.006^{2}-4\cdot (0.006)\cdot (- 9)}}{2\cdot (0.006)}$

A = 1.667 + 38.733

A = 40

By knowing the blood pressure and applying the quadratic formula, the age of a man whose normal blood pressure is 129 mm Hg is 40 years old.

To learn more on quadratic equations: brainly.com/question/1863222

#SPJ1

4 0

2 years ago