Answer:
20%
Step-by-step explanation:
Just did the question :)
Answer:
Please see attachment
Step-by-step explanation:
Please see attachment
Answer:
Explanation:
Verbal statements must be translated into algebraic expressions, equations or inequalities.
<u>1. Money earned by Jamie washing cars for $25 each</u>
Let x represent the number of cars Jaime washes.
<u>2. Money earned by Stella making pecan pies for $15 each</u>
Let y represent the number of pies she makes
<u>3. Constraint on the number of pies that Stella can make because she only has enough supplies to make 40 pies</u>.
Write an inequality using the symbol ≤, since y can take any integer value up to 40.
4. First question:
Part 1: Write a constraint (an inequality) to represent how much money Jamie needs for his trip
5. Second question:
Part 2: Write a constraint (an inequality) to represent how much money Stella needs for her trip.
6. Third question
Part 3: Write a constraint (an inequality) to represent the limitations of Stella's supplies.
From step # 3
7. Conclusion
You can solve the inequalities fo find whether Stella can or not afford the trip:
Solve for the inequalities that represent Stella's situation:
The solution set is the intersection of the two solutions:
- Interpretation: Stella will be able to make 40 pies, which represents a revenue of $ 15 / pie × 40 pie = $ 600, so she will be able to make the trip.
12 minus 15% is 10.20 so you have $2.80 per hour so 2.80 per hour times 250 hours gives you $700
Answer:
a) (76.21,83.79)
b) (77.32,82.68)
c) Interval decreases
Step-by-step explanation:
We are given the following information in the question:
Sample size, n = 60
Sample mean = 80
Sample standard Deviation, s = 15
a) 95% Confidence interval:
Putting the values, we get,
b) Sample size, n = 120
95% Confidence interval:
c) As observed increasing the sample size, the confidence interval become smaller.
