A German shepherd puppy weighed 25 pounds at 4 months old and 31 pounds at 5 months old. What is the percent increase or decreas
2 answers:
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Answer:
For this case we can find the margin of error like this:
Since we need to divide the width of the interval by 2.
And now with the margin of error we can find the sample mean with any of the two following ways:
So for this case the correct answer would be:
A. Sample Mean = 13.7; Margin of Error = 1.1
Step-by-step explanation:
Previous concepts
A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".
The margin of error is the range of values below and above the sample statistic in a confidence interval.
Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".
Solution to the problem
The confidence interval for the mean is given by the following formula:
(1)
In order to calculate the critical value we need to find first the degrees of freedom, given by:
We know that the confidence interval is given by:
For this case we can find the margin of error like this:
Since we need to divide the width of the interval by 2.
And now with the margin of error we can find the sample mean with any of the two following ways:
So for this case the correct answer would be:
A. Sample Mean = 13.7; Margin of Error = 1.1
The equation that is equivalent to S=pi r^2 h is h = S/pir^2
<h3>Subject of formula</h3>This is a way of representing a variable with another. Given the equation
S=pi r^2 h
We are to make 'h" the subject of the formula.
Divide both sides by pir^2
S/pir^2 =pi r^2 h/pir^2
h = S/pir^2
Hence the equation that is equivalent to S=pi r^2 h is h = S/pir^2
Learn more on subject of formula here: brainly.com/question/657646
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