helpp meeeeeeeeee (08.06 MC)Consider the following dot plot. Of the following statements, which two characteristics of this dot
plot make the median a better choice than the mean to summarize the center of the distribution? A dot plot with an axis marked from 0 to 10 at increments of 1 is shown. Plot shows 8 dots at 10, 7 dots at 9, 6 dots at 8, 3 dots at 7, 2 dots at 0 and 6, and 1 dot at 5. The mean is equal to the median and the data are symmetric. The peak is equal to the median and the data are skewed. The data are symmetric and there are outliers. The data are skewed and there are outliers.
2 answers:
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Answer:
The 99% confidence interval for the true mean number of hours a union member is absent per month is (0 hours, 16.5125 hours).
Step-by-step explanation:
We have that to find our level, that is the subtraction of 1 by the confidence interval divided by 2. So:
Now, we have to find z in the Ztable as such z has a pvalue of .
So it is z with a pvalue of , so
Now, find M as such
In which s is the standard deviation of the sample.
So
The lower end of the interval is the mean subtracted by M. So it is 7.5 - 9.0125 = -...
There is not a negative number of hours. So the lower end of the interval is 0 hours.
The upper end of the interval is the mean added to M. So it is 7.5 + 9.0125 = 16.5125 hours.
The 99% confidence interval for the true mean number of hours a union member is absent per month is (0 hours, 16.5125 hours).
Answer:
Step-by-step explanation:
If -2 and 5 are double roots of the polynomial function, then the function expression is
Rewrite this function in standard form:
The constant term of the polynomial in standard form is -40, so
Therefore, the function expression is