Answer:
2,157.89 KWH is the upper bound of the interval estimate for the population mean.
Step-by-step explanation:
We are given the following in the question:
Sample mean, = 2,000 KWH
Sample size, n = 33
Alpha, α = 0.01
Population standard deviation, σ = 106 KWH
99% Confidence interval:
Putting the values, we get,
2,157.89 KWH is the upper bound of the interval estimate for the population mean
Answer:
Step-by-step explanation:
Here is the complete question: 28 elementary schools to 16 middle schools, write the ratio in simplest form.
Given ratio= elementary schools: middle schools:: 28:16
The ratio can be written as
Now to write into simplest form, we need to divide both numerator and denominator by 4.
∴ elementary schools: middle schools=
Hence, we get simplest ratio of elementary schools to middle schools=
Show that the angles A and B are congruent
Answer:
Step-by-step explanation:
The diagram of the sled kite is attached below.
The central part of the kite is square.
We know by the property of a square that all its angles are congruent and equal to 90 degrees.
Therefore:
Angles A and B are congruent.
Solve for x by simplifying both sides of the equation,then isolating the variable.
the answer is
x= 1/3
15% = 0.15
0.15 x 20 = 3
15% of 20 is 3.