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kennyg02
19.11.2020 •
Mathematics
Given 2x -y > -2, x > 0, y < 4, 3y 4x - 12, find the maximum value of f(x, y) = 2x A. 8 B. 6 C.-2 D. 10
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Ответ:
range for mr Flore's test = 39
Range for mrs Duncan's test scores = 39
b) Mean of Flore's test scores= 86.7
Mean of Mrs. Duncan's test scores = 81.1
The mean of test scores of mr Flore's test scores is greater than the mean test scores of Mrs. Duncan's.
Step-by-step explanation:
Range is calculated by highest number in a data set - lowest number in a data set
Given the data set for Mr. Flores test scores: 92 87 61 82 98 100 77 64 85 93 92 87 100 93 90
Highest value = 100, lowest value = 61
a) Range for mr. Flore's test = 100 - 61 = 39
Given the data set for Mrs. Duncan's test scores: 82 85 91 76 79 82 95 56 95 89 88 64 69 78 88
ii) Range for mrs Duncan's test score= 95-56= 39
b) mean is calculated by total sum of scores/ number of scores
Mean for mr Flore's test scores = 92 +87 +61 +82 +98 +100 +77 +64 +85+ 93 +92 +87 +100 +93 +90 / 15
=1301/15
=86.7
Mean for mrs. Duncan's test scores = 82 +85 +91 +76+ 79 +82 +95 +56+ 95 +89+ 88+ 64+ 69 +78+ 88 / 15
=1217/15
=81.1
I hope this helps.