Answer:
115.3 hertz
Step-by-step explanation:
For either interval, the value of the sample mean is given by the average of the lower and upper bound of the confidence interval. Since both intervals were constructed by using the same sample, both values should be equal.
For the first interval:

For the second interval:

3 hours because all u do is subtract 5 hours and 8 hours and
Answer: 17
Step by step : 146+2x=180
2x=34
X=17
Answer:

Step-by-step explanation:
The formula of an area of a elipse:

We have:

Substitute:

Answer:
Not exactly sure but I think it should be 30 pieces
Step-by-step explanation: