Answer: I think he had started with 60 chips!
<em>have a good day/night! :D</em>
Answer:
![\bar X = \frac{Lower +Upper}{2}](https://tex.z-dn.net/?f=%5Cbar%20X%20%3D%20%5Cfrac%7BLower%20%2BUpper%7D%7B2%7D)
![\bar X= \frac{1.9+3.3}{2}= 2.6](https://tex.z-dn.net/?f=%5Cbar%20X%3D%20%5Cfrac%7B1.9%2B3.3%7D%7B2%7D%3D%202.6)
And the margin of error with this one:
![\bar X = \frac{Upper-Lower}{2}](https://tex.z-dn.net/?f=%5Cbar%20X%20%3D%20%5Cfrac%7BUpper-Lower%7D%7B2%7D)
![ME = \frac{3.3-1.9}{2}= 0.7](https://tex.z-dn.net/?f=%20ME%20%3D%20%5Cfrac%7B3.3-1.9%7D%7B2%7D%3D%200.7)
Step-by-step explanation:
Assuming that the parameter of interest is the sample mean
. And we can estimate this parameter with a confidence interval given by this formula:
(1)
For this case the confidence interval is given by (1.9, 3.3)
Since the confidence interval is symmetrical we can estimate the sample mean with this formula:
![\bar X = \frac{Lower +Upper}{2}](https://tex.z-dn.net/?f=%5Cbar%20X%20%3D%20%5Cfrac%7BLower%20%2BUpper%7D%7B2%7D)
![\bar X= \frac{1.9+3.3}{2}= 2.6](https://tex.z-dn.net/?f=%5Cbar%20X%3D%20%5Cfrac%7B1.9%2B3.3%7D%7B2%7D%3D%202.6)
And the margin of error with this one:
![\bar X = \frac{Upper-Lower}{2}](https://tex.z-dn.net/?f=%5Cbar%20X%20%3D%20%5Cfrac%7BUpper-Lower%7D%7B2%7D)
![ME = \frac{3.3-1.9}{2}= 0.7](https://tex.z-dn.net/?f=%20ME%20%3D%20%5Cfrac%7B3.3-1.9%7D%7B2%7D%3D%200.7)
Given:
Initial price of the stock=$43.85
Change for the first two days=+$2.70
Change for next two days=-$1.10
Last day=-$4.45
The objective is to find the price at the last day.
Let's take the price at final day as <em>x</em>.
![\begin{gathered} x=43.85+2.70+2.70-1.10-1.10-4.45 \\ x=42.6 \end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7D%20x%3D43.85%2B2.70%2B2.70-1.10-1.10-4.45%20%5C%5C%20x%3D42.6%20%5Cend%7Bgathered%7D)
Hence, the price of the stock at the last day is $42.6
To find the amount of money you pay for tax, you have to multiply the price of the product by the percentage of the tax, then divide it by 100. in this case, 76x5.6=425.6/100=4.256 which is $4.26 (to the nearest cent)
What are you asking ???
Write it in an equation ???
d+65-45=Final Balance
D+20=Final Balance
Not sure if this is what you're looking for !