Answer:
The 95% confidence interval
Step-by-step explanation:
From the question we are told that
The sample mean is
The standard deviation is
The sample size is n = 8
Given that the confidence level is 95% then the level of significance is
=>
Generally from the normal distribution table the critical value of is
Generally the margin of error is mathematically represented as
=>
=>
Generally 95% confidence interval is mathematically represented as
=>
=>
Answer:
both 45 degrees
Step-by-step explanation:
90 + 45 + 45 = 180 degrees
Hope this helps!
Vertical, because when two angles are across from each other they are the same angle measurement.
Answer:
<h2>The equation represents an ellipse with an eccentricity of 0.7.</h2>
Step-by-step explanation:
The given equation is
This equations represents a conic section in polar form, where the coefficient of the cosine function is the eccentricity of the conic section.
So, in this case, the eccentricity is , which indicates that the equation belong to an ellipse, because the eccentricy of ellipses are between 0 and 1.
Therefore, the equation represents an ellipse with an eccentricity of 0.7.