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dem82 [27]
2 years ago
13

An observational study found that the amount of sleep an employee gets each night is associated with job performance. The correl

ation coefficient was found to be r=0.86. A reader of the study concluded that more sleep causes employees to perform better. Why is such a conclusion not correct?
A)The correlation value should equal 1 for such a conclusion.
B)The correlation value should be negative for such a conclusion.
C)The sample was not representative of the population.
D) Causation cannot be determined from an observational study.
E) The correlation value implies that less than 75% of the variability in job performance can be explained by sleep.
Mathematics
1 answer:
blagie [28]2 years ago
6 0

Answer:

The correct option is D.) Causation cannot be determined from an observational study.

Step-by-step explanation:

The conclusion is not correct because

D.) Causation cannot be determined from an observational study.

Causation determined from an observational study is speculative and cannot be confirmed without data from a real experiment.

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How to factor 5m2-29m+20?
ser-zykov [4K]

Question :

5m^2 - 29m + 20

Steps:

What can u factor to get 20?

you can make 5 and 4 to make 20 so,..

1. Break it into groups

(5m^2 - 4m) + (-25m + 20)

*Factor out m from (5m^2 - 4m) : m(5m - 4)

*Factor out -5 from (-25m + 20) : -5(5m - 4)

2. Then, you can factor out the common term : (5m - 4) because they both have it. And then u would move the m by the -5 so,...

= (5m - 4)(m - 5) <======= <em>Answer</em>


Hope this helped!!!

~Shane


3 0
2 years ago
How is the product of 2 and -5 shown on a number line
otez555 [7]

Answer: on point -10

Step-by-step explanation:

Because 2*-5 is -10.

8 0
2 years ago
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Is each line parallel, perpendicular, or neither parallel nor perpendicular to a line whose slope is -6?
babymother [125]

Answer:

Line M - neither

Line N - parallel

Line P - perpendicular

Line Q - neither

Step-by-step explanation:

If a line is perpendicular to another, the slope will be the opposite, e.g. -6, opposite slope, -6.

If a line is parallel to another, the slope will be the exact same, e.g. -6, same slope, 1/6.

3 0
3 years ago
Helpppp :,[ also stay safe and have a great day!!!!!!!!!!!!!!!!!!!!!!1111
serious [3.7K]

Answer:

35÷7=5

Step-by-step explanation:

we have 7 small boxes in an oval and there are 5 ovals

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4 0
3 years ago
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Can someone help me plz?
Nikitich [7]

Answer:

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Step-by-step explanation:

1. Subtract

42,500 - 31,750 - 10,475 =

275

2. Get answer

275 non-spectators

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3 years ago
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