Answer:
depends to who ur talking to
Step-by-step explanation:
have fun in your interview
Answer: 0.6827
Step-by-step explanation:
Given : Mean IQ score : ![\mu=105](https://tex.z-dn.net/?f=%5Cmu%3D105%20)
Standard deviation : ![\sigma=15](https://tex.z-dn.net/?f=%5Csigma%3D15)
We assume that adults have IQ scores that are normally distributed .
Let x be the random variable that represents the IQ score of adults .
z-score : ![z=\dfrac{x-\mu}{\sigma}](https://tex.z-dn.net/?f=z%3D%5Cdfrac%7Bx-%5Cmu%7D%7B%5Csigma%7D)
For x= 90
![z=\dfrac{90-105}{15}\approx-1](https://tex.z-dn.net/?f=z%3D%5Cdfrac%7B90-105%7D%7B15%7D%5Capprox-1)
For x= 120
![z=\dfrac{120-105}{15}\approx1](https://tex.z-dn.net/?f=z%3D%5Cdfrac%7B120-105%7D%7B15%7D%5Capprox1)
By using the standard normal distribution table , we have
The p-value : ![P(90](https://tex.z-dn.net/?f=P%2890%3Cx%3C120%29%3DP%28-1%3Cz%3C1%29)
![P(z](https://tex.z-dn.net/?f=P%28z%3C1%29-P%28z%3C-1%29%3D%200.8413447-0.1586553%3D0.6826894%5Capprox0.6827)
Hence, the probability that a randomly selected adult has an IQ between 90 and 120 =0.6827
Answer: Infinitely many
Step-by-step explanation: 2(x-3)=10x-6-8x
2x-6=10x-6-8x
2x-6=2x-6
Answer:
k =4/5
Step-by-step explanation:
![k - 4.8=0.32 - 5.4k\\\mathrm{Multiply\:both\:sides\:by\:}100\\k\times\:100-4.8\times\:100=0.32\times\:100-5.4k\times\:100\\\\Refine\\100k-480=32-540k\\\\Add\: 480\mathrm{\:to\:both\:sides}\\100k-480+480=32-540k+480\\\\Simplify\\100k=-540k+512\\\\\mathrm{Add\:}540k\mathrm{\:to\:both\:sides}\\100k+540k=-540k+512+540k\\\\Simplify\\640k=512\\\\\mathrm{Divide\:both\:sides\:by\:}640\\\frac{640k}{640}=\frac{512}{640}\\\\k=\frac{4}{5}](https://tex.z-dn.net/?f=k%20-%204.8%3D0.32%20-%205.4k%5C%5C%5Cmathrm%7BMultiply%5C%3Aboth%5C%3Asides%5C%3Aby%5C%3A%7D100%5C%5Ck%5Ctimes%5C%3A100-4.8%5Ctimes%5C%3A100%3D0.32%5Ctimes%5C%3A100-5.4k%5Ctimes%5C%3A100%5C%5C%5C%5CRefine%5C%5C100k-480%3D32-540k%5C%5C%5C%5CAdd%5C%3A%20480%5Cmathrm%7B%5C%3Ato%5C%3Aboth%5C%3Asides%7D%5C%5C100k-480%2B480%3D32-540k%2B480%5C%5C%5C%5CSimplify%5C%5C100k%3D-540k%2B512%5C%5C%5C%5C%5Cmathrm%7BAdd%5C%3A%7D540k%5Cmathrm%7B%5C%3Ato%5C%3Aboth%5C%3Asides%7D%5C%5C100k%2B540k%3D-540k%2B512%2B540k%5C%5C%5C%5CSimplify%5C%5C640k%3D512%5C%5C%5C%5C%5Cmathrm%7BDivide%5C%3Aboth%5C%3Asides%5C%3Aby%5C%3A%7D640%5C%5C%5Cfrac%7B640k%7D%7B640%7D%3D%5Cfrac%7B512%7D%7B640%7D%5C%5C%5C%5Ck%3D%5Cfrac%7B4%7D%7B5%7D)
Answer:
0.62
Step-by-step explanation:
divide 56 by 90
Hope this helps :)