First you add 11+4 which equals 15 then you add 15+9 which equals 24. So Sandra sees 24 flags
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:
t = -1, 2
Step-by-step explanation:
Step 1: Define
h(t) = -5t² + 5t + 10
Step 2: Factor
h(t) = -5(t² - t - 2)
h(t) = -5(t - 2)(t + 1)
Step 3: Find roots
0 = -5(t - 2)(t + 1)
0 = (t - 2)(t + 1)
t - 2 = 0
t = 2
t + 1 = 0
t = -1
<span>-16 - w, when w = -23
-16 - (-43) = 27</span>
chal khud kar solve
nikal yahann se, khud mehnat se solve kar