If X > 0 and y > 0 , then which quadrant holds the solutions ?
1 answer:
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Step-by-step explanation:
Graph the parabola using the direction, vertex, focus, and axis of symmetry.
Direction: Opens Up
Vertex: (0,−2)
Focus:
Axis of Symmetry:
x
=
0
Directrix: y =
Answer:
The unit rate is 1.5
Step-by-step explanation:
Given
Required
Determine the unit rate
To do this, we need to express the ratio as:
<em>Where m is the unit rate</em>
Express as fraction
Solve
Express as ratio
<em>Hence, the unit rate is 1.5</em>
Answer:
The 95% confidence interval for the true mean cholesterol content, μ, of all such eggs is between 226.01 and 233.99 milligrams.
Step-by-step explanation:
We have that to find our level, that is the subtraction of 1 by the confidence interval divided by 2. So:
Now, we have to find z in the Ztable as such z has a pvalue of .
So it is z with a pvalue of , so
Now, find M as such
In which is the standard deviation of the population and n is the size of the sample.
The lower end of the interval is the sample mean subtracted by M. So it is 230 - 3.99 = 226.01
The upper end of the interval is the sample mean added to M. So it is 230 + 3.99 = 233.99.
The 95% confidence interval for the true mean cholesterol content, μ, of all such eggs is between 226.01 and 233.99 milligrams.