The best scale and interval to adopt for the amount of Fluoride axis would be 0 to 8 with intervals of 0.2
To make a decision on the scale and interval to adopt when making a graph ;
- We need to examine the the range of the values in the distribution.
- Data for the amount of Fluoride ranges from 0.4 to 7.1
- The number of values in the distribution is 7.
- Lower scale value must be below the minimum Fluoride value preferably 0
- Maximum scale value must be above the maximum Fluoride value.
- Hence an interval of 0 to 8 would suit the axis.
- The interval is the value of each unit represented on the graph.
- A scale of 4 would be too large to depict all the 7 values with an interval of 8 units
- Hence, the most reasonable scale from the option would be 0.2 as it would allow the points to be properly spaced on the graph.
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There are different kinds of poster. The appeal are used in the poster is to "persuasion". The poster aim to influence or convince the soldiers to carry out their duties without any disturbance or noise.
There are different kinds of appeals in persuasion. They are;
Pathos is known to be as an appeal to emotions. This is because, it aim too persuade one's audience by appealing to their feelings.
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The standard error of the difference of sample means is 0.444
From the complete question, we have the following parameters
<u>Canadians</u>
- Sample size = 50
- Mean = 4.6
- Standard deviation = 2.9
<u>Americans</u>
- Sample size = 60
- Mean = 5.2
- Standard deviation = 1.3
The standard error of a sample is the quotient of the standard deviation and the square root of the sample size.
This is represented as:
The standard error of the Canadian sample is:
So, we have:
The standard error of the American sample is:
So, we have:
The standard error of the difference of sample means is then calculated as:
This gives
Take square roots
Hence, the standard error of the difference of sample means is 0.444
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Microwaves cause internal heating of the body tissue
The pythagorean theorem is used to calculate the lengths of a right triangle
The hypotenuse of the triangle is 6.5 cm
<h3>How to determine the hypotenuse of the triangle?</h3>
From the complete question, we have the following side lengths
- Opposite = 5.7 cm
- Adjacent = 3.2 cm
The hypotenuse of the triangle is then calculated as:
Hypotenuse^2 = Opposite^2 + Adjacent^2
This gives
Hypotenuse^2 = 3.2^2 + 5.7^2
Evaluate the sum
Hypotenuse^2 = 42.73
Take the square root of both sides
Hypotenuse = 6.5
Hence, the hypotenuse of the triangle is 6.5 cm
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