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mezya [45]
2 years ago
11

144 students enter a spell bee, but only 1/6 of the group will make into the semi-final round, and only 2/3?​​that group will ma

ke into the final round. How many students will enter the final round of the spelling bee?
A8
B16
C24
D36
Mathematics
1 answer:
777dan777 [17]2 years ago
4 0

Answer:

The answer is B.

Step-by-step explanation:

We want 1/6 of 144, so we divide 144/6=24 students.

Then, only 2/3 of those 24 students will make it to the final round. So, we want to know how many students are in three (2/<u>3</u>) groups and we want two (<u>2</u>/3) of those groups. So, we divide those 24 students by 3 to know each group has 8 students and then we want 2 of those groups (remember <u>2</u>/3), so we multiply 2x8=16 students in the final round.

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PLEASE HELP WILL MARK BRAINLIEST
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Answer:

A.The mean would increase.

Step-by-step explanation:

Outliers are numerical values in a data set that are very different from the other values. These values are either too large or too small compared to the others.

Presence of outliers effect the measures of central tendency.

The measures of central tendency are mean, median and mode.

The mean of a data set is a a single numerical value that describes the data set. The median is a numerical values that is the mid-value of the data set. The mode of a data set is the value with the highest frequency.

Effect of outliers on mean, median and mode:

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  • Median: The presence of outliers in a data set has a very mild effect on the median of the data.
  • Mode: The presence of outliers does not have any effect on the mode.

The mean of the test scores without the outlier is:

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*Here <em>n</em> is the number of observations.

So, with the outlier the mean is 86 and without the outlier the mean is 86.9333.

The mean increased.

Since the median cannot be computed without the actual data, no conclusion can be drawn about the median.

Conclusion:

After removing the outlier value of 72 the mean of the test scores increased from 86 to 86.9333.

Thus, the the truer statement will be that when the outlier is removed the mean of the data set increases.

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