Answer:
Switch to the other streaming service
Step-by-step explanation:
So, 96$ with a 12% increase is $107.52.
But if you do 8.75×12 you get $105.
So Clare should switch to the other music stream.
Answer:
Composite Area = 1105.94
Step-by-step explanation:
Remark
The two semi circles at each end make an entire circle with radius 11. The width of the central rectangle = the diameter of the circle. The area should be able to be found.
Width
2*radius = width
width = 2 * 11
width = 22
Area of the circle
Area = pi * r^2
r = 11
Area = 3.14 * 11^2
Area = 3.14 * 121
Area = 379.94
Area of the rectangle
Area = L * W
L = 33
W = 22
Area = 33 * 22
Area = 726
Total Area
Total Area = Area of Rectangle + Area of the Circle
Total Area = 726 + 379.94 = 1105.94
Y is greater than or equal to 5. It says no less than, making the equal to possible.
Answer:
The mark-up percentage is 136%
Step-by-step explanation:
59 - 25 = 34
34/25 = 1.36
Step-by-step explanation:
Given that,
Point estimate = sample mean = \bar x = 32.9
sample standard deviation = s = 12.1
sample size = n = 114
Degrees of freedom = df = n - 1 = 114 - 1 = 113
a) t distribution,
b) At 90% confidence level
\alpha = 1 - 90%
\alpha =1 - 0.90 =0.10
\alpha/2 = 0.05
t\alpha/2,df = t0.05,113 = 1.658
Margin of error = E = t\alpha/2,df * (s /\sqrtn)
= 1.658 * (12.1 / \sqrt 114 )
Margin of error = E = 1.879
The 90% confidence interval estimate of the population mean is,
T ± E
= 32.9 ± 1.879
= ( 31.021, 34.779 )
With 90% confidence the population mean minutes of concentration is between 31.021 and 34.779 minutes.
c) If many groups of 114 randomly selected members are studied, then a different confidence interval would be produced from each group. About 90 percent of these confidence intervals will contain the true population mean minutes of concentration and about 10 percent will not contain the true population mean minutes of concentration.