Answer:
Step-by-step explanation:
Given that the sample mean for a random sample of 100 cars is 27.2 miles and assume the standard deviation is 2.4 miles.
H0: x bar = 25.9
Ha: x bar ≠ 25.9
(Two tailed test at 95% confidence)
Alpha =0.05
The hypothetical mean is 25.900
The actual mean is 27.200
The difference between these two values is 1.300
The 95% confidence interval of this difference:
From -3.462 to 6.062
t = 0.5417
df = 99
standard error of difference = 2.400
The two-tailed P value equals 0.5893
Since p >0.05 this difference is considered to be not statistically significant.
Answer:
<h2>
27</h2>
Step-by-step explanation:
To find the range you have to subtract the smallest number from the biggest, so if the range is 18, you have to add 18 and 9 to find the largest number.
I hope this helps! If you don't mind, please mark as brainliest! Thanks :)
we can use formula
![y=ab^x](https://tex.z-dn.net/?f=%20y%3Dab%5Ex%20)
now, we can find a and b
Initially , price is 500
so,
At ![x=0,y=500](https://tex.z-dn.net/?f=%20x%3D0%2Cy%3D500%20)
![500=ab^0](https://tex.z-dn.net/?f=%20500%3Dab%5E0%20)
![a=500](https://tex.z-dn.net/?f=%20a%3D500%20)
now, we can plug back
![y=500(b)^x](https://tex.z-dn.net/?f=%20y%3D500%28b%29%5Ex%20)
At ![x=3,y=10](https://tex.z-dn.net/?f=%20x%3D3%2Cy%3D10%20)
we can use it and find b
![10=500(b)^3](https://tex.z-dn.net/?f=%2010%3D500%28b%29%5E3%20)
now, we can solve for b
and we get
![b=0.27144](https://tex.z-dn.net/?f=%20b%3D0.27144%20)
so,
annual depreciation rate is 27.144%.......Answer
Answer:
18
Step-by-step explanation:
(4x3)x3-6x(9/3)
12x3-6x3
36-18 = 18
open the parenthes. and then after that you'll get 27+12x-15. if you simplify that then you'll get 12x+12