(a) Question: There are 8 horses in a race at Retama Park. You could win a BIG jackpot if you can pick the finishing order for ALL 8 of the horses. Find the number of possible orders in which the hors
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You would need 5 more x rays because then it would be a ratio of 30 x rays/ 60 ultrasound technicians. Which would be simplified to 1 x ray to every 2 ultrasounds
Answer:
Option A)
Confidence interval decreases
Step-by-step explanation:
If we increase the sample size, then,
- The standard error of the interval decrease.
- If the standard error increase, the margin of error of the interval decrease.
- If the margin of error decreases, the width of the confidence level decreases, hence, the confidence interval become narrower.
Thus, the correct answer is
Option A)
Confidence interval decreases
Answer:
$94,090.
Step-by-step explanation:
We have been given that the value of a machine depreciates each year by 3%.
We can see that the value of machine is depreciating exponentially, so let us write an exponential function for the given situation.
Since we know that an exponential function is in form:
, where,
a = Initial value.
b = For decay function b equals (1-r), where r is rate in decimal form.
Let us convert our given rate in decimal form.
![3\%=\frac{3}{100}=0.03](https://tex.z-dn.net/?f=3%5C%25%3D%5Cfrac%7B3%7D%7B100%7D%3D0.03)
Upon substituting a=1,00,000, x=2 and r=0.03 in exponential decay function we will get,
![y=1,00,000(1-0.03)^2](https://tex.z-dn.net/?f=y%3D1%2C00%2C000%281-0.03%29%5E2)
![y=1,00,000(0.97)^2](https://tex.z-dn.net/?f=y%3D1%2C00%2C000%280.97%29%5E2)
![y=1,00,000*0.9409](https://tex.z-dn.net/?f=y%3D1%2C00%2C000%2A0.9409)
![y=94,090](https://tex.z-dn.net/?f=y%3D94%2C090)
Therefore, the value of the machine after 2 years will be $94,090.