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Delicious77 [7]
2 years ago
12

The struggle is real

Mathematics
1 answer:
Over [174]2 years ago
8 0
To find the slope between the points, you can use the slope intercept formula 
(y2-y1)/(x2-x1) which is used to find the slope of two points. Since you already have two sets of coordinate points, you can plug in the values. This would look like this:
(-14-0)/(1-(-6))

Then, you simplify to get the fraction -14/7 which simplifies to your slope, -2.
Answer: Slope is -2
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2. A statistics student plans to use a TI-84 Plus calculator on her final exam. From past experience, she estimates that there i
Anarel [89]

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  1. P(≥1 working) = 0.9936
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1. Assuming the failure is in the calculator, not the operator, and the failures are independent, the probability of finishing with at least one working calculator is the complement of the probability that both will fail. That is ...

... P(≥1 working) = 1 - P(both fail) = 1 - P(fail)² = 1 - (1 - 0.92)² = 0.9936

2. The odds in favor of finishing an exam starting with only one calculator are 0.92 : 0.08 = 11.5 : 1.

If two calculators are brought to the exam, the odds in favor of at least one working calculator are 0.9936 : 0.0064 = 155.25 : 1.

This odds ratio is 155.25/11.5 = 13.5 times as good as the odds with only one calculator.

_____

My assessment is that there is significant gain from bringing a backup. (Personally, I might investigate why the probability of failure is so high. I have not had such bad luck with calculators, which makes me wonder if operator error is involved.)

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