Answer:
(121.576 ; 273.424)
Step-by-step explanation:
Given the data:
175, 125, 180, 220, 240, 245
We can calculate the mean and standard deviation
Mean = Σx/ n = 1185 / 6 = 197.5
Standard deviation = 46.125 (calculator)
The confidence interval :
Mean ± margin of error
Margin of Error = Tcritical * s/sqrt(n)
Tcritical at 99%, df = n - 1 ; 6 - 1 = 5
Tcritical = 4.032
Margin of Error = 4.032 * 46.125/√6
Margin of error = 75.924
Confidence interval :
197.5 ± 75.924
Lower boundary = 197.5 - 75.924 = 121.576
Upper boundary = 197.5 + 75.924 = 273.424
(121.576 ; 273.424)
Answer:
Because the 8 parts are equal, there is an equal chance of landing on each part. The chance of landing on any part is 1/8. This means that it would be impossible to predict with certainty which section will be landed on, because there is an equal chance of each.
Does that help?
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
V = (4/3) pi r^3
V = 1.333 * 3.14 * 11^3
11^3 = 1331
V = 1.333 * 3.14 * 1331
V = 5572
Answer:
how many feet of fencing does he have?
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Step-by-step explanation:
Answer:
The measure of angle DCB = 125
Step-by-step explanation:
This is because angle ACD and angle DCB are supplementary.
Supplementary angles are two angles with a sum of 180 degrees, and we know these angles are supplementary by the fact that angle ACB = 180 degrees.
