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Mice21 [21]
3 years ago
13

In a study of a particular brand of laptop computer, one group of 9 batteries lasted an average of 17.8 hours before needing rec

harging, and a second group of 11 batteries lasted an average of 18.1 hours. The difference between the two groups was found to be statistically significant. Are the results practically significant? Why or why not?
Yes, because the same brand of computer was used for all of the tests.
Yes, because results that are statistically significant are also practically significant.
No, because the 0.3 hour difference in battery life was small.
No, because there were more batteries in the second group.
Mathematics
2 answers:
Elenna [48]3 years ago
8 0

Answer:

<h2>No, because there were more batteries in the second group.</h2>

Step-by-step explanation:

Practically significance refers to the importance and impact results have in real life, not in a experiment.

The fact that hours change don't mean that have significance in a practical way, because the comparison between groups is not equal due to the differences between the amount of batteries tested. So, the different hours can be implied by the different number of batteries, because the average as a statistical measure changes when the number of elements is different.

Therefore, that difference between groups cannot ensure a practical significance.

german3 years ago
5 0
Yes because the results that are statistically significant are also practically significant
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cupoosta [38]

Answer:

incorrect

Step-by-step explanation:

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4 0
3 years ago
Otto used 5.5 cups of whole wheat flour and x cups of white flour in the recipe. What is the equation that can
timurjin [86]

This situation of the recipe can be represented as y=x+5.5 and it is expected that x is ≥ 0 and y is ≥ 5.5.

<h3>What is the equation for this situation?</h3>

It is known the total amount of flour (y) is equivalent to the total amount of whole wheat flour (5.5) added to the total white flour (x). Therefore, the equation is:

y = x + 5.5

The possible values are

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y = It is expected y is equal than 5.5 or greater to it since even if no

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brainly.com/question/10413253

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4 0
2 years ago
What are the weights (in Newton’s) for the given masses 22.1,33.5,41.3,59.2,78
Blababa [14]

Answer:

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2.328.635 N

3. 405.153 N

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Step-by-step explanation:

1. Let the mass is 22.1 kg, then the weight in Newton will be (22.1 × 9.81) = 216.8 N {Where acceleration due to gravity is 9.81 m/sec²}

2. Let the mass is 33.5 kg, then the weight in Newton will be (33.5 × 9.81) = 328.635 N {Where acceleration due to gravity is 9.81 m/sec²}

3. Let the mass is 41.3 kg, then the weight in Newton will be (41.3 × 9.81) = 405.153 N {Where acceleration due to gravity is 9.81 m/sec²}

4. Let the mass is 59.2 kg, then the weight in Newton will be (59.2 × 9.81) = 580.752 N {Where acceleration due to gravity is 9.81 m/sec²}

5. Let the mass is 78 kg, then the weight in Newton will be (78 × 9.81) = 765.18 N {Where acceleration due to gravity is 9.81 m/sec²}

(Answer)

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3 years ago
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slava [35]
Y+3=1/2•(x+8) (point slope form)
should be correct
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3 years ago
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