Answer:
a) Mean: 900
Standard deviation: 24
b) Very unusual
c) Unusual
Step-by-step explanation:
We have a population proportion p=0.36 and we are taking a sample of size n=2500. This can be modeled as binomial sampling.
For this sampling distribution, we have a mean and STD that can be calculated as:
b) A value of 840 is a very unusual as is more than 2 standard deviations from the expected value of 900 (more exactly, at 2.5 standard deviations). Approximately 2% of the values are below 2 standars deviations from the mean.
Having 840 or less televisions tuned to "Eyewitness News" would have a probability of P=0.00621.
c) A value of 945 would be also unusual, but not as unusual as 840, as is between 1 and 2 standard deviation from the expected value.
Having 945 or more televisions tuned to "Eyewitness News" would have a probability of P=0.0304.
Answer:
A=301.59 yd2
Step-by-step explanation:
A=2πrh+2πr2
Thats the formula
Answer:
I think around 43.3%
Step-by-step explanation:
<u>215-150</u>
150
<u>65</u>
150 x 100
=43.3333333333333
The sample space of Shari's tree diagram is the total possible outcomes of rolling the game piece and spinning the pointer.
It doesn't matter if Shari starts with the spinner or the game piece
<h3>How to determine the tree diagram</h3>
The experiment involves:
- Rolling a 12-sided game piece
- Spinning the pointer of a 4-section spinner
If Shari starts with the game piece, the sample size (n) would be:
n = 12 * 4
n = 48
If Shari starts with the spinner, the sample size (n) would be:
n = 4 * 12
n = 48
Notice that the sample size remains unchanged irrespective of what he starts with
Hence, it doesn't matter if Shari starts with the spinner or the game piece
Read more about tree diagram at:
brainly.com/question/2581880
Answer:
B)Only one graph intersects the y-axis above y=0
Step-by-step explanation:
Both functions are in y=mx+b. The y-intercept is b.
f(x) has the y-intercept 3. It intersects above y=0.
g(x) has the y-intercept -4. It intersects below y=0.
This means B is correct.