Answer:
The total area:
12 units²
Step-by-step explanation:
There are three parts on this shape:
1 big right triangle
1 rectangle
1 small right triangle
area = (4*4)/2 = 16/2 = 8units²
area = 2*1 = 2units²
area = (2*2)/2 = 2units²
8+2+2 = 12 units²
Answer:$15.25
Step-by-step explanation:just multiply $1.25x9 then add 4
Answer:
y= 1/4x -2
Step-by-step explanation:
Y=mx+b
m is the slope
b is the y intercept
Answer:
The price of the homes in the Pittsburgh sample typically vary by about $267,210 from the mean home price of $500,000.
Step-by-step explanation:
The dotplots reveal that the variability of home prices in the Pittsburgh sample is greater than the variability of home prices in the Philadelphia sample. Therefore, the standard deviation of the home prices for the Pittsburgh sample is $267,210 rather than $100,740. The correct interpretation of this statistic is that the price of homes in Pittsburgh typically vary by about $267,210 from the mean home price of $500,000.
Answer:
The probability that no more than more than 11 of them need correction for their eyesight is 0.00512
No, 11 is not a significantly low low number of adults requiring eyesight correction .
Step-by-step explanation:
A survey showed that 77% of adults need correction for their eyesight.
If 22 adults are randomly selected, find the probability that no more than more than 11 of them need correction for their eyesight.
n =22
p = 0.77
q = 1-p = 1- 0.77=0.23
We are supposed to find ![P(x\leq 11)](https://tex.z-dn.net/?f=P%28x%5Cleq%2011%29)
![P(x\leq 11)=P(x=1)+P(x=2)+P(x=3)+.....+P(x=11)](https://tex.z-dn.net/?f=P%28x%5Cleq%2011%29%3DP%28x%3D1%29%2BP%28x%3D2%29%2BP%28x%3D3%29%2B.....%2BP%28x%3D11%29)
Formula : ![P(x=r)=^nC_r p^r q^{n-r}](https://tex.z-dn.net/?f=P%28x%3Dr%29%3D%5EnC_r%20p%5Er%20q%5E%7Bn-r%7D)
![P(x\leq 11)=^{22}C_1 (0.77)^1 (0.23)^{22-1}+^{22}C_2 (0.77)^2 (0.23)^{22-2}+^{22}C_3 (0.77)^1 (0.23)^{22-3}+.....+^{22}C_{11} (0.77)^1 (0.23)^{22-11}](https://tex.z-dn.net/?f=P%28x%5Cleq%2011%29%3D%5E%7B22%7DC_1%20%280.77%29%5E1%20%280.23%29%5E%7B22-1%7D%2B%5E%7B22%7DC_2%20%280.77%29%5E2%20%280.23%29%5E%7B22-2%7D%2B%5E%7B22%7DC_3%20%280.77%29%5E1%20%280.23%29%5E%7B22-3%7D%2B.....%2B%5E%7B22%7DC_%7B11%7D%20%280.77%29%5E1%20%280.23%29%5E%7B22-11%7D)
Using calculator
![P(x\leq 11)=0.00512](https://tex.z-dn.net/?f=P%28x%5Cleq%2011%29%3D0.00512)
So, The probability that no more than more than 11 of them need correction for their eyesight is 0.00512
No, 11 is not a significantly low low number of adults requiring eyesight correction .