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Sati [7]
3 years ago
13

Which of these r-values represents the strongest correlation? O A. -0.7 Caty B. -0.6 O C. -0.4 O D. -0.5​

Mathematics
1 answer:
Flura [38]3 years ago
4 0

Answer:

-0.4

Step-by-step explanation:

its that one

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1) -7(5j + 5) distributive property
goblinko [34]

Answer:

-35j-35

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
A random sample of 121 automobiles traveling on an interstate showed an average speed of 73 mph. from past information, it is kn
tatiyna

121 is big enough to assume normality and not worry about the t distribution. By the 68-95-99.7 rule a 95% confidence interval includes plus or minus two standard deviations. So 95% of the cars will be in the mph range


(73 - 2 \cdot 11, 73 + 2 \cdot 11) = (51,95)


The question is a bit vague, but it seems we're being asked for the 95% confidence interval on the average of 121 cars. The 121 is a hint of course.


The standard deviation of the average is in general the standard deviation of the individual samples divided by the square root of n:


\sigma = \dfrac{ 11}{\sqrt{121}} = 1


So repeating our experiment of taking the average 121 cars over and over, we expect 95% of the averages to be in the mph range


(73 - 2 \cdot 1, 73 + 2 \cdot 1) = (71,75)


That's probably the answer they're looking for.



4 0
3 years ago
What is the solution to the inequality?<br><br> 6x − 5 &gt; −29
juin [17]
X > -4 is the answer to the inequality
 
8 0
3 years ago
Read 2 more answers
Please help! Thank youuuu!
ExtremeBDS [4]
F(x) = 3x² + 6x - 1

The graph is a parabola open upward (a= 3>0) with a minimum.

Calculate the vertex:

x = -b/2a → x = -6/(2.3) = -1. Then the axis of symmetry is x = - 1
Now to calculate the minimum, plugin the value of x:

y = 3x² + 6x - 1

y = 3(-1)² + 6(-1) -1

y= 3 - 6 -1 and y = - 4,

Ten the vertex (minimum) is at (-1,- 4)


4 0
3 years ago
to communication companies offer calling plans with company X it cost $0.30 to connect and then $0.03 for each minute with compa
mario62 [17]

Answer:

$0.30 + $0.03n > $0.02 + $0.02n

Step-by-step explanation:

company x = $0.30 + $0.03n

company y = $0.02 + $0.02n

$0.30 + $0.03n > $0.02 + $0.02n

4 0
2 years ago
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