Answer:
<h2>
$5.03</h2>
Step-by-step explanation:
Given data
Sample Mean (M): $48.77
Sample Size (n): 20
Standard Deviation (σ) : $17.58
Confidence Level: 80%
we know that z*-Values for 80% Confidence Levels is 1.28
the expression for margin of error is given bellow\
MOE= z*σ/√n
We can now substitute into the expression and solve for the MOE as
MOE= 1.28*17.58/√20
MOE= 22.502/4.47
MOE= 22.502/4.47
MOE= 5.03
The margin of error for a 80 % confidence interval is $5.03
Answer:
The constant of proportionality is 54.
k = 54
c as a function of d:
Step-by-step explanation:
We are given the following in the question:
c is inversely proportional to the square of d.
When c = 6, d = 3.
Plugging the values, we get,
Thus, the constant of proportionality is 54.
c as a function of d can be written as:
We have to find value of c when d = 7.
Putting values, we get,
is the required value of c.
43.87 - 8 = 35.87 (sandals)
9.49 + 9.49 = 18.98 ( for two t-shirts)
35.87 - 18.98 = 16.89 (t-shirts)
16.89 - 2.87 = 14.02 (taxes)
Andrea payed $14.02 for a pair of jeans
Hopes this helps you!
Answer: The answer is option B.
Step-by-step explanation:
