Math 110 Test 4 Solved 100% Correct
Compound interest formula - ANSWER-A=P(1+r/n)^nt
How do you find the expectation of a situation? - ANSWER-Multiply each possible
outcome by the probability they occur and add the results.
How do you find variance - ANSWER-It is the product of step 4 in the standard deviation
steps.
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)
which is your next test, divided by the number of total tests (7) equal to wanted average
(79).
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 "In your English class, essays are 40% of your
grade, homework is 20% of your grade, attendance is 5% of your grade, and the final
project is 35% of your grade. At the end of the semester, your essay average is 83, your
homework average is 93, and your attendance average is 95. What score do you need
on the final project to get an A- (90%) in the class? (Round your answer to 2 decimal
places.)" - ANSWER-Take your percentages/ weights and multiply them with the value.
(0.40(83)+0.20(93)+0.05(95)+0.35(x)) equal to the wanted final grade (90).
Maturity/future value formula - ANSWER-A=P+I or A=P+Prt.
Mean - ANSWER-Average (find by adding all the elements up and divide by the total #
of elements)
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
Quartiles - ANSWER--remember put in order first
Q1-Median of first half of data
Q2-Median
Q3-Median of 2nd half of data.
Compound interest formula - ANSWER-A=P(1+r/n)^nt
How do you find the expectation of a situation? - ANSWER-Multiply each possible
outcome by the probability they occur and add the results.
How do you find variance - ANSWER-It is the product of step 4 in the standard deviation
steps.
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)
which is your next test, divided by the number of total tests (7) equal to wanted average
(79).
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 "In your English class, essays are 40% of your
grade, homework is 20% of your grade, attendance is 5% of your grade, and the final
project is 35% of your grade. At the end of the semester, your essay average is 83, your
homework average is 93, and your attendance average is 95. What score do you need
on the final project to get an A- (90%) in the class? (Round your answer to 2 decimal
places.)" - ANSWER-Take your percentages/ weights and multiply them with the value.
(0.40(83)+0.20(93)+0.05(95)+0.35(x)) equal to the wanted final grade (90).
Maturity/future value formula - ANSWER-A=P+I or A=P+Prt.
Mean - ANSWER-Average (find by adding all the elements up and divide by the total #
of elements)
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
Quartiles - ANSWER--remember put in order first
Q1-Median of first half of data
Q2-Median
Q3-Median of 2nd half of data.
