Answer:
B. Yes, the proportion of girls is significantly different from 0.5
Step-by-step explanation:
Given that a clinical trial tests a method designed to increase the probability of conceiving a girl. In the study 340 babies wereborn, and 306 of them were girls.
Sample proportion =
Std error of p =
For sample size large, we find that t distribution almost coincides with z distribution
Hence 99% critical value = 2.58
Margin of error = 2.58*std error = 0.0420
Confidence interval =
=
0.858<p<0.942
Yes, this method is effective becuse lower bound itself is 0.858 i.e. there is 85.8%chance for getting girls in birth
B. Yes, the proportion of girls is significantly different from 0.5
Answer:
Try subtracting 585 to 20
Step-by-step explanation
then after you dom that times 360 and 20
Answer:
m=4
Step-by-step explanation:
-5m=-20
m= - 20/-5
m=4
Answer:
<em>720</em>
<em>12</em>
<em>120</em>
Step-by-step explanation:
<u>Factorials</u>
We must recall that the factorial of a number n (positive or zero) is the product of all the integers from n down to 1
Let's evaluate the given expressions
Similarly
Finally