Make a table of values for the function rule. then graph the function. y=-x²+4
1 answer:
Answer:
check the attached picture
Step-by-step explanation:
Given function is .
Now we need to make a table of values for the function rule then graph the function.
We are free to plug any values of x like -3,-2,-1,0,1,2,3,... etc becaues domain of polynomial function is all real numbers.
Let's plug x=1 into given function to find the y-value
Hence the first point is (1,3).
Same way we can find few more points to complete the table then graph those points and connect them to get the final graph.
x y
-2 8
-1 5
0 4
1 5
2 8
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Answer:
The distribution of proportion of people who will get the flu this winter is <em>N</em> (0.065, 0.014²).
Step-by-step explanation:
Let <em>X</em> = number of people who will get flu this year.
The sample selected is of size, <em>n</em> = 309.
The number of people who will get flu in this sample is, <em>x</em> = 20.
Compute the sample proportion of people who will get flu as follows:
The random variable <em>X</em> follows a Binomial distribution with parameters <em>n</em> = 309 and <em>p</em> = 0.065.
The sample size is quite large, i.e. <em>n</em> = 309 > 30.
And the probability of success is low.
So the Normal approximation to Binomial can be used to approximate the distribution of sample proportion is:
- np ≥ 10
- n(1 - p) ≥ 10
Check whether the conditions are fulfilled or not as follows:
Hence, the conditions are fulfilled.
The sampling distribution of sample proportion is:
Compute the mean and variance as follows:
Thus, the distribution of proportion of people who will get the flu this winter is <em>N</em> (0.065, 0.014²).