There are 1000 meters in a km. Therefore 2 km is equal to 2000 meters.
Using the z-distribution, the 99% confidence interval for the true population mean textbook weight is (72.37, 81.63).
<h3>What is a z-distribution confidence interval?</h3>
The confidence interval is:

In which:
is the sample mean.
is the standard deviation for the population.
In this problem, we have a 99% confidence level, hence
, z is the value of Z that has a p-value of
, so the critical value is z = 2.575.
The other parameters are given as follows:

Hence the lower and upper bound of the interval are given, respectively, by:
More can be learned about the z-distribution at brainly.com/question/25890103
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We can solve this problem by simply using ratio and
proportion. Let us call the height of the flagpole to be X. Therefore the ratio
and proportion would be:
3 ft is to 4 ft and X ft is to 72 ft
3 / 4 = X / 72
X = (3 / 4) * 72
X = 54 ft
<span>The height of the flagpole is 54 ft.</span>
Answer:
- y=8x-3
- y=-2x-1
- y=-x-1
- y=4x+5
- y=3
- y=7x+0 or y=7x
- y=10x+4
- y=-6x+9
the equation for the graph:
y=2x-2
use the y-intercept ((0,-2))
and the for the slope you do y1-y2/x1-x2
0-(-2)/1-0= 2
100/10 to find out how many mL to pour in each cup, equally
Which is 10