SOLUTION: Problems 10, 11, 12, and 13 below refer to the "cognitive ability" scores for a sample of students: Cognitive Ability Relative Frequency 90 ---- 0.08 95 --

Question 507810: Problems 10, 11, 12, and 13 below refer to the "cognitive ability" scores for a sample of students:
Cognitive Ability Relative Frequency
90 ---- 0.08
95 ---- 0.21
100 ---- 0.04
105 ---- 0.15
110 ---- 0.07
115 ---- 0.18
120 ---- 0.05
125 ---- 0.22
Total 1.00

Problem #10:
What is the estimated probability that a randomly selected student from the sample has a score that is more than 115?
Problem #11:
What is the estimated probability that a randomly selected student from the sample has a score that is 110 or more?
Problem #12:
What is the estimated probability that a randomly selected student from the sample has a score that is 105 or less?
Problem #13:
What is the estimated probability that a randomly selected student from the sample has a score that is less than 115?

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Problems 10, 11, 12, and 13 below refer to the "cognitive ability" scores for a sample of students:
Cognitive Ability Relative Frequency
90 ---- 0.08
95 ---- 0.21
100 ---- 0.04
105 ---- 0.15
110 ---- 0.07
115 ---- 0.18
120 ---- 0.05
125 ---- 0.22
Total 1.00
Problem #10:
What is the estimated probability that a randomly selected student from the sample has a score that is more than 115?:::0.27
---------------------
Problem #11:
What is the estimated probability that a randomly selected student from the sample has a score that is 110 or more?::::0.52
--------------------
Problem #12:
What is the estimated probability that a randomly selected student from the sample has a score that is 105 or less?:::0.48
--------------------
Problem #13:
What is the estimated probability that a randomly selected student from the sample has a score that is less than 115?:::0.55
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Cheers,
Stan H.
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