Here's my work. Hope this helps.
You have to multiply the previous year $ with 5.5% or 0.055 (they're the same) .The price would increase by 849.91500 so when you add the previous price with the 849.91500, you would get $16302.915
Answer:
i dont know
Step-by-step explanation:
In all you have to pay $240.45 the tax is $11.45
Answer:
![X \sim N(\mu= 70, \sigma=15)](https://tex.z-dn.net/?f=%20X%20%5Csim%20N%28%5Cmu%3D%2070%2C%20%5Csigma%3D15%29)
From this info and using the empirical rule we know that we will have about 68% of the scores between:
![\mu -\sigma = 70-15=55](https://tex.z-dn.net/?f=%20%5Cmu%20-%5Csigma%20%3D%2070-15%3D55)
![\mu +\sigma = 70+15=85](https://tex.z-dn.net/?f=%20%5Cmu%20%2B%5Csigma%20%3D%2070%2B15%3D85)
95 % of the scores between:
![\mu -2\sigma = 70-2*15=40](https://tex.z-dn.net/?f=%20%5Cmu%20-2%5Csigma%20%3D%2070-2%2A15%3D40)
![\mu +2\sigma = 70+2*15=100](https://tex.z-dn.net/?f=%20%5Cmu%20%2B2%5Csigma%20%3D%2070%2B2%2A15%3D100)
And 99.7% of the values between
![\mu -3\sigma = 70-3*15=25](https://tex.z-dn.net/?f=%20%5Cmu%20-3%5Csigma%20%3D%2070-3%2A15%3D25)
![\mu +3\sigma = 70+3*15=115](https://tex.z-dn.net/?f=%20%5Cmu%20%2B3%5Csigma%20%3D%2070%2B3%2A15%3D115)
Step-by-step explanation:
For this problem we can define the random variable of interest as "the student grades" and we know that the distribution for X is given by:
![X \sim N(\mu= 70, \sigma=15)](https://tex.z-dn.net/?f=%20X%20%5Csim%20N%28%5Cmu%3D%2070%2C%20%5Csigma%3D15%29)
From this info and using the empirical rule we know that we will have about 68% of the scores between:
![\mu -\sigma = 70-15=55](https://tex.z-dn.net/?f=%20%5Cmu%20-%5Csigma%20%3D%2070-15%3D55)
![\mu +\sigma = 70+15=85](https://tex.z-dn.net/?f=%20%5Cmu%20%2B%5Csigma%20%3D%2070%2B15%3D85)
95 % of the scores between:
![\mu -2\sigma = 70-2*15=40](https://tex.z-dn.net/?f=%20%5Cmu%20-2%5Csigma%20%3D%2070-2%2A15%3D40)
![\mu +2\sigma = 70+2*15=100](https://tex.z-dn.net/?f=%20%5Cmu%20%2B2%5Csigma%20%3D%2070%2B2%2A15%3D100)
And 99.7% of the values between
![\mu -3\sigma = 70-3*15=25](https://tex.z-dn.net/?f=%20%5Cmu%20-3%5Csigma%20%3D%2070-3%2A15%3D25)
![\mu +3\sigma = 70+3*15=115](https://tex.z-dn.net/?f=%20%5Cmu%20%2B3%5Csigma%20%3D%2070%2B3%2A15%3D115)