Math 110 Test 4 Questions With Correct/Updated Answers
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Course
Math 110
Institution
Math 110
How do you find the expectation of a situation? - ANSWER-Multiply each possible outcome by the probability they occur and add the results.
When dealing with expectation questions involving gambling what should you always do? - ANSWER-Multiply the money bet with possible winnings.
What does I,...
Math 110 Test 4 Questions With Correct/Updated
Answers
How do you find the expectation of a situation? - ANSWER-Multiply each possible
outcome by the probability they occur and add the results.
When dealing with expectation questions involving gambling what should you always
do? - ANSWER-Multiply the money bet with possible winnings.
What does I, P, r, t, and n - ANSWER-I=Interest
P=principal (original $ value)
r=Interest rate
t= time (# of years)
n= Compound value (# of time compounded per year)
Mean - ANSWER-Average (find by adding all the elements up and divide by the total #
of elements)
What is the exact method and what is the original method? Which one should you use?
- ANSWER--Used for converting t from days to years
Exact method- #of days/365
Ordinary method: #of days/360. (Use ordinary)
Median - ANSWER-The middle value or mean of the 2 middle values.
Mode - ANSWER-the value that occurs most frequently may be one or more or none
Weighted mean - ANSWER-Used when not all values are equally important (have
different weights)
Weighted mean formula - ANSWER-Sum of (value x weights)/total weights
How would you solve the following "In a math class, one of your 4 test scores is
dropped. On the first three tests, you have the following scores: 71, 37, and 95. What
score do you need on the next test for your average to be 75 (assuming you drop the
lowest test score)?" - ANSWER-Take your highest scores (71 and 95), add them
together, plus x (last test score), divided by number of elements (3) equaled to the
wanted class average (75).
How would you solve the following "After six biology tests, Ruben has a mean score of
77. What score does Ruben need on the next test to raise his average (mean) to 79?" -
ANSWER-Take your mean score (77) multiply it by the number of tests (6) add it to x (1)
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