Answer:
Jamil's gum were the cheapest ($.20).
Step-by-step explanation:
Kendra's Ratio: $1.20/4
- Kendra's cost per gum is $.30
Taliyah's Ratio: $6.60/20
- Taliyah's cost per gum is $.33
Jamil's Ratio: $1/5
- Jamil's cost per gum is $.20
Fredrick's Ratio: $.25/1
- Fredrick's cost per gum is $.25
Answer:
The answers is "
Option B".
Step-by-step explanation:
![CI=\hat{Y}\pm t_{Critical}\times S_{e}](https://tex.z-dn.net/?f=CI%3D%5Chat%7BY%7D%5Cpm%20t_%7BCritical%7D%5Ctimes%20S_%7Be%7D)
Where,
predicted value of lead content when traffic flow is 15.
![\to df=n-1=8-1=7](https://tex.z-dn.net/?f=%5Cto%20df%3Dn-1%3D8-1%3D7)
![95\% \ CI\ is\ (463.5, 596.3) \\\\\hat{Y}=\frac{(463.5+596.3)}{2}\\\\](https://tex.z-dn.net/?f=95%5C%25%20%5C%20CI%5C%20%20is%5C%20%20%28463.5%2C%20596.3%29%20%5C%5C%5C%5C%5Chat%7BY%7D%3D%5Cfrac%7B%28463.5%2B596.3%29%7D%7B2%7D%5C%5C%5C%5C)
Calculating thet-critical value
The lower predicted value ![=529.9-2.365(Se)](https://tex.z-dn.net/?f=%3D529.9-2.365%28Se%29)
![463.5=529.9-2.365(Se)\\\\529.9-463.5=2.365(Se)\\\\66.4=2.365(Se)\\\\Se=\frac{66.4}{2.365} \\\\Se=28.076](https://tex.z-dn.net/?f=463.5%3D529.9-2.365%28Se%29%5C%5C%5C%5C529.9-463.5%3D2.365%28Se%29%5C%5C%5C%5C66.4%3D2.365%28Se%29%5C%5C%5C%5CSe%3D%5Cfrac%7B66.4%7D%7B2.365%7D%20%5C%5C%5C%5CSe%3D28.076)
When
of CI use as the expected lead content:
![\to 529.9\pm t_{0.005,7}\times 28.076 \\\\=(529.9 \pm 3.499 \times 28.076)\\\\=(529.9 \pm 98.238)\\\\=(529.9-98.238, 529.9+98.238)\\\\=(431.662, 628.138)\\\\=(431.6, 628.1)](https://tex.z-dn.net/?f=%5Cto%20529.9%5Cpm%20t_%7B0.005%2C7%7D%5Ctimes%2028.076%20%5C%5C%5C%5C%3D%28529.9%20%5Cpm%203.499%20%5Ctimes%2028.076%29%5C%5C%5C%5C%3D%28529.9%20%5Cpm%2098.238%29%5C%5C%5C%5C%3D%28529.9-98.238%2C%20529.9%2B98.238%29%5C%5C%5C%5C%3D%28431.662%2C%20628.138%29%5C%5C%5C%5C%3D%28431.6%2C%20628.1%29)
Answer:
-7.2
Step-by-step explanation:
5 acute angle 6 obtuse angle 7 right angle
Answer:
The product rule is if the two "parts" of the function are being multiplied together, and the chain rule is if they are being composed. For instance, to find the derivative of f(x) = x² sin(x), you use the product rule, and to find the derivative of g(x) = sin(x²) you use the chain rule.
(sorry i didn't use the example but i hope this sort of helps!)