Use this scenario to answer questions #1-11: Jenny wants to rent a truck. She contacted two companies. Laguna’s Truck Rentals ch
arges $6 for the truck and $2 per mile. Salvatory’s Truck Rentals charges $3 per mile.
please do all of the parts,, im begging
im literally offering all the points i have rn i might cry
1. Identify the independent variable
2. Identify the dependent variable
3. Create an equation to represent the total cost for Laguna’s Truck Rentals.
4. Create an equation to represent the total cost for Salvatori’s Truck Rentals.
5. Select the graph below that best represents the relationship between Laguna's and Salvatory's Truck Rentals. (please see image)
6. Identify and interpret the meaning of the slope for Laguna’s Truck Rentals.
7. Identify and interpret the meaning of the slope for Salvatori's Truck Rentals.
8. Identify and interpret the meaning of the y-intercept for Laguna’s Truck Rentals.
9. Identify and interpret the meaning of the y-intercept for Salvatori's Truck Rentals.
10. Identify and interpret the meaning of the point of intersection.
11. Which of these graphs represents a proportional relationship and why?
if you actually did all of them im giving you a hug.
please do all of the parts,, im begging
im literally offering all the points i have rn i might cry
1. Identify the independent variable
2. Identify the dependent variable
3. Create an equation to represent the total cost for Laguna’s Truck Rentals.
4. Create an equation to represent the total cost for Salvatori’s Truck Rentals.
5. Select the graph below that best represents the relationship between Laguna's and Salvatory's Truck Rentals. (please see image)
6. Identify and interpret the meaning of the slope for Laguna’s Truck Rentals.
7. Identify and interpret the meaning of the slope for Salvatori's Truck Rentals.
8. Identify and interpret the meaning of the y-intercept for Laguna’s Truck Rentals.
9. Identify and interpret the meaning of the y-intercept for Salvatori's Truck Rentals.
10. Identify and interpret the meaning of the point of intersection.
11. Which of these graphs represents a proportional relationship and why?
if you actually did all of them im giving you a hug.
1 answer:
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Answer:
H₀: μ₁ - μ₂ = 0
H₁: μ₁ - μ₂ ≠ 0
(–2975, 175)
Do not reject H₀
Step-by-step explanation:
Hello!
The objective of this experiment is to test if the salaries of elementary school teachers are equal in two districts. You can test this trough the population means of the salaries of the teachers if they are either equal or different or directly test if the difference between the salaries of the two districts is cero or not, symbolically: μ₁ - μ₂ = 0
Remember, in the null hypothesis is usually stated the known information, is the "no change" premise and always carries the = symbol.
The hypothesis is:
H₀: μ₁ - μ₂ = 0
H₁: μ₁ - μ₂ ≠ 0
You have two normally distributed variables and you are studying the difference of the means. You can use a pooled Z to make the interval, the formula is:
X[bar]₁-X[bar]₂ ± *(√(σ₁²/n₁+σ₂²/n₂)
Since the test is two-tailed and at a signification level of 5% I've made the interval at the complementary confidence level of 95% so that I can use it to decide over the hypothesis.
X[bar]₁-X[bar]₂ ± *(√(σ₁²/n₁+σ₂²/n₂)
=
= 1,96
[28900-30300 ± 1.96*(√((2300)²/15+(2100)²/15)]
[-1400 ± 1576,15]
[-2976.15;176,15]
Since I've approximated to two decimal units in the intermediate calculations, the values differ slightly, but the interval is:
(–2975, 175)Now, since the 0 is contained in the Confidence interval, the decision is to not reject the null hypothesis. In other words, the difference in average salaries between the two districts is cero.
I hope it helps!