The conclusion for p, from the confidence interval, using an absolute value inequality is:
<h3>What is a confidence interval?</h3>
A confidence interval is given by the <u>estimate plus minus the margin of error</u>. As an inequality, we have that the absolute value of the difference between the proportion and the estimate is of at most the margin of error, that is:
For this problem, the estimate and the margin of error are:
E = 0.27, M = 0.019.
Hence the inequality is:
More can be learned about confidence intervals at brainly.com/question/25890103
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Answer:
The correct option is C
Step-by-step explanation:
We will find the complement of event A.
Complement of A= U-A.
We can also write it as A^c=U-A
Complement is defined as all elements of Universal set NOT in set A.
Given sets are:
U={1,2,3,4,5,6}
A={Rolling a 1,2,3}
Then,
A^c=U-A
A^c={1,2,3,4,5,6} - {Rolling a 1,2,3}
A^c={Rolling a 4,5 or 6}.
Thus the correct option is C....
Y=4x shows y as the total earnings and x as the number of windows
Answer:
10
Step-by-step explanation:
Answer:
x = number of packets of strawberry wafers = 4 packets
y = number of packets of chocolate wafers = 18 packets
Step-by-step explanation:
Devon and his friends bought strawberry wafers for $3 per packet and chocolate wafers for $1 per packet at a carnival. They spent a total of $30 to buy a total of 22 packets of wafers of the two varieties.
Part A: Write a system of equations that can be solved to find the number of packets of strawberry wafers and the number of packets of chocolate wafers that Devon and his friends bought at the carnival. Define the variables used in the equations. (5 points)
Part B: How many packets of chocolate wafers and strawberry wafers did they buy? Explain how you got the answer and why you selected a particular method to get the answer. (5 points)
A.
Let
x = number of packets of strawberry wafers
y = number of packets of chocolate wafers
x + y = 22
3x + y = 30
B. Solve the equation in A using elimination method
x + y = 22 (1)
3x + y = 30 (2)
subtract (1) from (2) to eliminate y
3x - x = 30 - 22
2x = 8
x = 8/2
x = 4
Substitute x = 4 into (1) to solve for y
x + y = 22 (1)
4 + y = 22
y = 22 - 4
y = 18
x = number of packets of strawberry wafers = 4 packets
y = number of packets of chocolate wafers = 18 packets