Dorothy and Thelma both host book clubs. The box and whisker plots represented the attendance of their book clubs. The scale rep
resents the number of people in attendance,
Based on the graphs, which statement about the clubs is true?
A) The attendence at Thelma' boook club varies more because teh difference between in first quartile and its maximum attendence is greater than that of Dorothy's book club.
B) The attendence at Dorothy's book club varies more because the difference between its median and maximum attendence is greater than that Therma's book club.
C) The attendence at Thelma's book club varies more because its range is greater than the range of attendence at Dorothy's Book club.
D) The attendence varies teh same amount at both book clubs because the interquartile range of both books clubs is the smae.
Based on the graphs, which statement about the clubs is true?
A) The attendence at Thelma' boook club varies more because teh difference between in first quartile and its maximum attendence is greater than that of Dorothy's book club.
B) The attendence at Dorothy's book club varies more because the difference between its median and maximum attendence is greater than that Therma's book club.
C) The attendence at Thelma's book club varies more because its range is greater than the range of attendence at Dorothy's Book club.
D) The attendence varies teh same amount at both book clubs because the interquartile range of both books clubs is the smae.
1 answer:
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Answer:
Between 38 and 86 months.
Step-by-step explanation:
Chebyshev Theorem
The Chebyshev Theorem can also be applied to non-normal distribution. It states that:
At least 75% of the measures are within 2 standard deviations of the mean.
At least 89% of the measures are within 3 standard deviations of the mean.
An in general terms, the percentage of measures within k standard deviations of the mean is given by .
In this question:
Mean of 62, standard deviation of 12.
Between what two lifetimes does Chebyshev's Theorem guarantee that we will find at least approximately 75% of the computers?
Within 2 standard deviations of the mean, so:
62 - 2*12 = 38
62 + 2*12 = 86
Between 38 and 86 months.