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:
0.0903
Step-by-step explanation:
Given that :
The mean = 1450
The standard deviation = 220
sample mean = 1560
P(X> 1560) = P(Z > 0.5)
P(X> 1560) = 1 - P(Z < 0.5)
From the z tables;
P(X> 1560) = 1 - 0.6915
P(X> 1560) = 0.3085
Let consider the given number of weeks = 52
Mean = np = 52 × 0.3085 = 16.042
The standard deviation =
The standard deviation =
The standard deviation = 3.3306
Let Y be a random variable that proceeds in a binomial distribution, which denotes the number of weeks in a year that exceeds $1560.
Then;
Pr ( Y > 20) = P( z > 20)
From z tables
P(Y > 20) 0.0903