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hippocampus
21.06.2019 •
Mathematics
3.17 scores on stats final. below are final exam scores of 20 introductory statistics students. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 57, 66, 69, 71, 72, 73, 74, 77, 78, 78, 79, 79, 81, 81, 82, 83, 83, 88, 89, 94 (a) the mean score is 77.7 points. with a standard deviation of 8.44 points. use this information to determine if the scores approximately follow the 68-95-99.7% rule. (b) do these data appear to follow a normal distribution? explain your reasoning using the graphs provided below.
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Ответ:
Yes they do.
And yes they do follow a normal distribution.
Ответ:
see below
Step-by-step explanation:
5x-2y= -10
Let y=0, and solve for x
5x = -10
Divide by 5
5x/5 = -10/5
x = -2
The x intercept is -2 or (-2,0)
Let x=0, and solve for y
-2y = -10
Divide by -2
-2y/-2 = -10/-2
y = 5
The y intercept is 5 or (0,5)