The answer is 320 scans in all
It says in all so you have to multiply 40 with 8 and you'll get 320
Hope this Helped!!!
Answer:
0.4967<p<0.6033
Not effective
Step-by-step explanation:
given that a clinical trial tests a method designed to increase the probability of conceiving a girl.
In the study 580 babies were born, and 319 of them were girls
Sample proportion p= ![\frac{319}{580} =0.55](https://tex.z-dn.net/?f=%5Cfrac%7B319%7D%7B580%7D%20%3D0.55)
![q=1-p =0.45](https://tex.z-dn.net/?f=q%3D1-p%20%3D0.45)
Standard error of proportion p = ![\sqrt{\frac{pq}{n} } =0.0207](https://tex.z-dn.net/?f=%5Csqrt%7B%5Cfrac%7Bpq%7D%7Bn%7D%20%7D%20%3D0.0207)
Margin of error for 99%= Z critical * std error=![2.58*0.0207\\=0.0533](https://tex.z-dn.net/?f=2.58%2A0.0207%5C%5C%3D0.0533)
(Since sample size is large Z value is used)
Confidence interval 99%
=![(0.55-0.0533, 0.55+0.0533)\\= (0.4967, 0.6033)](https://tex.z-dn.net/?f=%280.55-0.0533%2C%200.55%2B0.0533%29%5C%5C%3D%20%280.4967%2C%200.6033%29)
0.4967<p<0.6033
This method appears to be not effective as the confidence interval 99% contains 0.50 indicating probability for girls is still 0.50
A. Low
The lower the inflation rate, the better
hope this helps
Answer:
the slope is -5x
Step-by-step explanation:
y=mx+b
m= slope
b= y-int
x= vairable
y= answer
You just divide them. So the answer is 743