Mathematics, 14.01.2021 14:00 bigblow
A researcher selects a random sample of 200 students to determine whether there is a relationship
between the number of days a student is absent and the student's grade point average. The
correlation coefficient, r, of the data is -0.765. On the basis of the correlation coefficient alone, can the
researcher conclude that an increase in the number of days a student is absent causes the student's
grades to drop?
No, because other factors may have influenced the student grades.
Yes, because ris very close to - 1
Yes, because the students in the sample were randomly selected
No because ris negative
Answers: 2
Mathematics, 21.06.2019 14:30
Use the x-intercept method to find all real solutions of the equation.x^3-10x^2+27x-18=0
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Mathematics, 21.06.2019 22:30
Abucket of paint has spilled on a tile floor. the paint flow can be expressed with the function p(t) = 6(t), where t represents time in minutes and p represents how far the paint is spreading. the flowing paint is creating a circular pattern on the tile. the area of the pattern can be expressed as a(p) = 3.14(p)^2 part a: find the area of the circle of spilled paint as a function of time, or a[p(t)]. show your work. part b: how large is the area of spilled paint after 8 minutes? you may use 3.14 to approximate pi in this problem.
Answers: 2
Mathematics, 21.06.2019 23:00
Which of the following graphs could represent a cubic function?
Answers: 1
A researcher selects a random sample of 200 students to determine whether there is a relationship
b...
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