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diamong [38]
3 years ago
15

The events x and y have a correlation coefficient of r= 0.02. What is the relationship between x and y? A) The events have a str

ong negative linear correlation. B) The events have a strong positive linear correlation. C) The events have a weak negative linear correlation. D) There is little or no linear correlation.
Mathematics
2 answers:
kkurt [141]3 years ago
6 0

Answer:

Step-by-step explanation:

if r=1 perfect positive correlation.

if r=-1 ,perfect negative correlation.

r=0 ,no correlation.

r=.02 ,so D

jenyasd209 [6]3 years ago
4 0

Answer:

<h2>D) There is little or no linear correlation.</h2>

Step-by-step explanation:

To answer this question we just have to know that linear correlations are from -1 to 1, being 0 in the middle.

So, if the linear correlation is near to 1, it's a positive strong correlation. If it's near -1, it's a negative strong correlation. And if the linear correlation coefficient is near to zero, then the correlation is almost null, there's no correlation if it's zero,

Therefore, the correct answer is D, there is little correlation because the coefficient is 0.02, really close to zero.

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The amounts of nicotine in a certain brand of cigarette are normally distributed with a mean of 0.917 g and a standard deviation
Nutka1998 [239]

Answer:

z = \frac{0.872-0.917}{\frac{0.303}{\sqrt{37}}}= -0.903

And we can find this probability to find the answer:

P(z

And using the normal standar table or excel we got:

P(z

Step-by-step explanation:

Let X the random variable that represent the amounts of nocatine of a population, and for this case we know the distribution for X is given by:

X \sim N(0.917,0.303)  

Where \mu=0.917 and \sigma=0.303

We have the following info from a sample of n =37:

\bar X= 0.872 the sample mean

And we want to find the following probability:

P(\bar X \leq 0.872)

And we can use the z score formula given by;

z=\frac{x-\mu}{\frac{\sigma}{\sqrt{n}}}

And if we find the z score for the value of 0.872 we got:

z = \frac{0.872-0.917}{\frac{0.303}{\sqrt{37}}}= -0.903

And we can find this probability to find the answer:

P(z

And using the normal standar table or excel we got:

P(z

6 0
3 years ago
Select all that apply.
vfiekz [6]

Answer:

1/3 , 4/15 , 5/6

Step-by-step explanation:

All you have to do is plug the fractions in your calculator and you see that 1/3, 4/15, and 5/6 are repeating, but the others stop after only a couple of decimal places.

Hope this helps!

4 0
3 years ago
Solve for y. You must write your answer in fully simplified form.<br><br> -12 = -5y
MArishka [77]

Answer:

Y= 12/5

Step-by-step explanation:

-12= -5y

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vlabodo [156]

Answer:

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