The dot plot below shows the number of books 26 students read in a month: Is the median or the mean a better center for this dat
a and why?
A.Mean; because the data is skewed and there are outliers
B.Mean; because the data is symmetric and there are outliers
C.Median; because the data is skewed and there are outliers
D.Median; because the data is symmetric and there are outliers
A.Mean; because the data is skewed and there are outliers
B.Mean; because the data is symmetric and there are outliers
C.Median; because the data is skewed and there are outliers
D.Median; because the data is symmetric and there are outliers
1 answer:
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Because the account is compounded continuously, Euler number is required
e = 2.7182818
The confidence interval for the mean usage of water is (18.7,20.5).
Given population standard deviation of 2.4, mean of 19.5 gallons per day and confidence interval of 98%.
We have to find the confidence interval for the mean usage of water.
To find out the confidence interval we have to first find margin of error.
μ=19.5
σ=2.4
α=0.98
α/2=0.49
We have to find the z value for the p value 0.49 which is z=2.33
Margin of error=z*μ/
=2.33*19.5/
=0.82
lower level=mean -m
=19.5-0.82
=18.68
after rounding upto 1 decimal
=18.7
upper mean = mean+m
=19.5+0.82
=20.52
Hence the confidence interval for the usage of water is (18.7,20.52).
Learn more about margin of error at brainly.com/question/10218601
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