Answer:
Solution
=3
=−9
x=3
x=−9
x=3x=−9
Step-by-step explanation:
Boom
Answer:
interval = [17.3948 , 20.6052]
Step-by-step explanation:
given,
random sample (n) = 45
average product lifespan = 19 years
standard deviation = 4 years
confidence interval of 99 % = ?
we know,
t* = qt(1.99/2 + 44 ) = qt(0.995,44)
t* = 2.692
so,
interval
![x = 19 \pm t* \times (\dfrac{s}{\sqrt{n}})](https://tex.z-dn.net/?f=x%20%3D%2019%20%5Cpm%20t%2A%20%5Ctimes%20%28%5Cdfrac%7Bs%7D%7B%5Csqrt%7Bn%7D%7D%29)
![x = 19 \pm 2.692 \times (\dfrac{4}{\sqrt{45}})](https://tex.z-dn.net/?f=x%20%3D%2019%20%5Cpm%202.692%20%5Ctimes%20%28%5Cdfrac%7B4%7D%7B%5Csqrt%7B45%7D%7D%29)
![x = 19 \pm 2.692 \times 0.5963](https://tex.z-dn.net/?f=x%20%3D%2019%20%5Cpm%202.692%20%5Ctimes%200.5963)
![x = 19 \pm 1.6052](https://tex.z-dn.net/?f=x%20%3D%2019%20%5Cpm%201.6052)
interval = [19 - 1.6052 , 19 + 1.6052]
interval = [17.3948 , 20.6052]
Answer:
43.75 mph
Step-by-step explanation:
Divide 75 by 4 and divide 4 by 4 which gets the unit rate
Answer:
Hourly.
There really is no explanation to it..
Answer:
is I don't know really a option L.MAOO
anyway option 3,4, and 5 ( maybe 6 but not sure) are correct