Answer:
A. 14.6 ± 7.00
Step-by-step explanation:
Formula for the confidence interval between the two mean is;
CI = (μ2 - μ1) ± z√[((s1)²/n1) + ((s2)²/n2)]
We are given;
μ1 = 94.5
μ2 = 109.1
s1 = 10
s2 = 9
n1 = 10
n2 = 10
The z-value at confidence interval of 90% is 1.645
Thus;
CI = (109.1 - 94.5) ± 1.645√[(10²/10) + (9²/10)]
CI = 14.6 ± 7.00
Answer:
The graph is shown below.
Step-by-step explanation:
The trigonometric expression is:
The general form is:
Comparing the two expression we know:
a = 1
b = 1
c = 0
d = -5
Compute the value of amplitude, |<em>a </em>| as follows:
Compute the period of the function as follows:
Compute the phase shift as follows:
The vertical shift is:
The properties of the trigonometric function are:
Amplitude = 1
Period = 2π
Phase shift = 0
Vertical shift = -5
Plot the graph of the trigonometric function by selecting a few points.
<em> x</em> :
f (<em>x</em>) : -5 -4 -5 -6 -5
The graph is shown below.
225
4
____________X
= 225
4
____________x
0
= 225 ................... (2x4) + 2
4
____________ x
00
= 225 ............................... (2x4) + 1
4
____________x
900
Answer:
selling price is $26.4
Step-by-step explanation:
Here, we want to apply the markup percentage so as to get the price of the jewelry
mathematically, we have the selling price as;
$22 + (30% of $22)
= $22 + 4.4
= $26.4