Answer:
[300.202 , 329.798]
Step-by-step explanation:
The 95% confidence interval is given by the interval
where
<em>is the sample mean </em>
<em>s is the sample standard deviation </em>
<em>n is the sample size (n = 7) </em>
is the 0.05 (5%) upper critical value for the Student's t-distribution with 6 degrees of freedom (sample size -1), which is <em>an approximation to the Normal distribution for small samples (n<30).</em>
Either by using a table or the computer, we find
and our 95% confidence interval is
Answer:
The tree is approximately 22.707 meters tall.
Step-by-step explanation:
The geometric diagram of the problem is included below as attachment. The height of the tree is found by means of trigonometric functions:
Where:
- Elevation angle, measured in sexagesimal degrees.
- Height of the tree, measured in meters.
- Length of the tree shadow, measured in meters.
The height of the tree is cleared in the equation:
If and , the height is:
The tree is approximately 22.707 meters tall.
Answer:
Thank you sir
Step-by-step explanation:
ellipse with dashed line boundary
(1,-2)
(-2,0)
Answer:
Well it depends, if you're talking about an arithmetic sequence for the recursive formula, then it would be "aₙ=aₙ₋₁+d" but if you're talking about a geometric sequence, then it would be "aₙ=aₙ₋₁ (r)"
Step-by-step explanation: