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tensa zangetsu [6.8K]
3 years ago
13

The correlation coefficient for poor health and not exercising in a group of people is 0.67. Analyze the following statement: Po

or health is caused by not exercising. Is this a reasonable conclusion? Yes; everyone who doesn't exercise is by definition unhealthy Yes; the correlation coefficient is above 0.5, so that implies causation No; the data doesn't suggest a causation, and many people are healthy who don't exercise No; poor health and not exercising are completely unrelated
Mathematics
2 answers:
soldier1979 [14.2K]3 years ago
7 0

Answer:

Base on the statement ‘Poor health is caused by not exercising’, there is a greater chance of having poor health without exercising. It is also said that the correlation between poor health and not exercising a group people is 67%.  


Step-by-step explanation:


wolverine [178]3 years ago
3 0

Answer with explanation:

⇒Correlation coefficient for poor health and not exercising in a group of people = 0.67(r)

⇒ -1 ≤ r ( Correlation coefficient) ≤ 1

⇒If the value of , r < 0.8 or r > -0.8 , are not considered Significant.

⇒So, there is not strong correlation between people who do not exercise and their health.

The Statement we have to analyze is:→

                           Poor health is caused by not exercising.

Option A: Yes; everyone who doesn't exercise is by definition unhealthy.

⇒Keep in mind:→ Simple Walk is also a Exercise.

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Answer:

159.8195397043133

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If a quartic equation has a real root, what do you know about the other roots of the equation? Explain.
Alex17521 [72]

Answer:

A) Real Roots

B) Imaginary Roots

C) Equal Roots

D) Unequal Roots

E) Rational Roots

F) Irrational Roots

Step-by-step explanation:

The equation with one variable , in which the highest power of variable is two , is know as QUADRATIC EQUATION

ex - 3x² + 4x + 7 = 0

Every quadratic equation gives to values of unknown variables and these values is called roots of equation .

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A) Real Roots

B) Imaginary Roots

C) Equal Roots

D) Unequal Roots

E) Rational Roots

F) Irrational Roots

The nature of Roots depends entirely on the value of it Discriminant

If D = 0 ,  Roots are real and equal

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Answer

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3 years ago
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Step-by-step explanation:

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find the standard deviation for this data set 9, 15, 13, 9, 15 round your answer to the nearest tenth
KatRina [158]

Answer:

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Step-by-step explanation:

Sample standard deviation is found by steps below.

<u>Find the mean:</u>

  • μ = (9 + 15 + 13 + 9 + 15)/5 = 12.2

<u>Find deviations from the mean and their squares:</u>

  • 9 - 12.2 = - 3.2 ⇒ (-3.2)² = 10.24
  • 15 - 12.2 = 2.8 ⇒ 2.8² = 7.84
  • 13 - 12.2 = 0.8 ⇒ 0.8² = 0.64
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<u>Sum the squares:</u>

  • 10.24*2 + 7.84*2 + 0.64 = 36.8

<u>Divide by N - 1 (N - number of samples):</u>

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<u>Square root is the sample standard deviation:</u>

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