Trumpet=1\2 x 4=2
trombone=2+2=4
tubas=2
answer=2+2+4=8
Hey there! I"m happy to help!
We see that 1 inch is equal to 5.6 miles for this scale factor. If we have three inches, we simply multiply 5.6 by 3 to figure out how many miles this is!
5.6(3)=16.8
Therefore, Janet's home is 16.8 miles from her office.
Have a wonderful day! :D
Answer: The margin of error is 0.041.
Step-by-step explanation:
Since we have given that
n = 1010
x = 515
So, it becomes ![\hat{p}=\dfrac{x}{n}=\dfrac{515}{1010}=0.51](https://tex.z-dn.net/?f=%5Chat%7Bp%7D%3D%5Cdfrac%7Bx%7D%7Bn%7D%3D%5Cdfrac%7B515%7D%7B1010%7D%3D0.51)
At 99% level of confidence ,
z = 2.58
So, Margin of error would be
![z\sqrt{\dfrac{\hat{p}(1-\hat{p}}{n}}\\\\=2.58\sqrt{\dfrac{0.51\times (1-0.51)}{1010}}\\\\=2.58\times \sqrt{\dfrac{0.51\times 0.49}{1010}}\\\\=2.58\times 0.0157\\\\=0.041](https://tex.z-dn.net/?f=z%5Csqrt%7B%5Cdfrac%7B%5Chat%7Bp%7D%281-%5Chat%7Bp%7D%7D%7Bn%7D%7D%5C%5C%5C%5C%3D2.58%5Csqrt%7B%5Cdfrac%7B0.51%5Ctimes%20%281-0.51%29%7D%7B1010%7D%7D%5C%5C%5C%5C%3D2.58%5Ctimes%20%5Csqrt%7B%5Cdfrac%7B0.51%5Ctimes%200.49%7D%7B1010%7D%7D%5C%5C%5C%5C%3D2.58%5Ctimes%200.0157%5C%5C%5C%5C%3D0.041)
Hence, the margin of error is 0.041.