Homework Answers
Solution:
From the Given Boxplot , Given Values are
Q1= 1200; Q2=1800 and Q3=3000
We Know IQR=Q3-Q1
IQR= 3000-1200
IQR=1800
Thus , IQR is 1800.
Add Answer to:
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How many students had a monthly income below $3000?
What is the upper and lower fence?
2. The box plot of monthly income of 280 randomly selected students is displayed below 1800 500 4000 1200 3000
At a college, 61 female students were randomly selected and it was found that their monthly income had a standard deviation of $230.85. For 121 male students, the standard deviation was $320.53. Test the claim that variance of monthly incomes is higher for male students than it is foi female students. Use a = 0.01.
the
data below are the final exam scores of 10 randomly selected
statistics students and the number of hours they studied for the
exam. What is the best predicted value for the exam score for a
student who stuided 2 hours? Assume that the varibles x and y have
a significant correlation.
Question 10 1 pts The data below are the final exam scores of 10 randomly selected statistics students and the number of hours they studied for the exam....
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r folder. Or import from another browser. Import favorites 114. Forty randomly selected students were asked the number of pairs of sneakers they owned. Let X the number of pairs of sneakers owned. The results are as follows: requency Relative Frequency Cumulative Relative Frequency 2 15 4 12 12 Table 2.81 a. Find the sample mean, i b Find the sample standard deviation, s c. Construct a histogram of the data. d. Complete the columns of the chart. e....
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