Select the correct answer from each drop-down menu. The first quartile of the data set represented by the box plot is . The medi
an of the data set is
1 answer:
Answer:
The first quartile of the data set represented by the box plot is 12
The median of the data set is 16
Step-by-step explanation:
The computation is shown below:
Quartile means the third digit form the starting
While on the other hand the median represent the mid value of the data set that is shown in the inner side of the box plot as on the vertical line
So, the median of the data set is 16
The same is to be considered
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Answer:
So the answer for this case would be n=62 rounded up to the nearest integer
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".
represent the sample mean for the sample
population mean
represent the population standard deviation
n represent the sample size (variable of interest)
Confidence =95% or 0.95
The margin of error is given by this formula:
(1)
And on this case we have that ME =15, and we are interested in order to find the value of n, if we solve n from equation (1) we got:
(2)
The critical value for 95% of confidence interval is provided, , replacing into formula (2) we got:
So the answer for this case would be n=62 rounded up to the nearest integer