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cymoneej
15.01.2021 •
Mathematics
Find the slope from this graph
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Ответ:
m (slope) = 664
Step-by-step explanation:
Formula:
m (slope) = y1-y2/x1-x2
m = 16570 - 21226 / 1982 - 1986
= -4,656 / -4
= 664
Ответ:
a
b
c
d
e
Mean![\mu = 7](/tpl/images/0851/7103/8179a.png)
Standard deviation
Step-by-step explanation:
From the question we are told that
The amount of time a repairman needs to fix a furnace is uniformly distributed from 5 and 9 hours
Generally the probability that it takes the repairman more than 7 hours to fix a furnace is mathematically represented as
=>![P(X 7) = 0.5](/tpl/images/0851/7103/b8ecb.png)
Generally the probability that a randomly selected furnace repair requires less than 3 hours. is mathematically represented as
=>![P(X < 3) = -0.5](/tpl/images/0851/7103/7aee4.png)
Generally the 30th percentile of furnace repair times is mathematically represented as
=>![0.3 = \frac{x - 5}{9-5}](/tpl/images/0851/7103/5dc08.png)
=>![x = 6.2 \ hours](/tpl/images/0851/7103/f24e6.png)
Generally the time taken for the longest 25% of furnace repair is mathematically evaluated as
Here making use of the
because we are considering duration that fall with the top ![25^{th}](/tpl/images/0851/7103/deac5.png)
=>![0.75 = \frac{x_1 - 5}{9-5}](/tpl/images/0851/7103/ea73d.png)
=>![x_1 = 8 \ hours](/tpl/images/0851/7103/73752.png)
Generally the mean is mathematically represented as
=>![\mu = 7](/tpl/images/0851/7103/8179a.png)
Generally the standard deviation is mathematically represented as
=>