Question:
Solution:
Note that :
where the left hand of the equation represents a trinomial and the right hand of the equation represents a product of two binomials. Then, we can conclude that the correct answer is:
B
Answer:
Step-by-step explanation:
Given that Home sales has 95% confidence interval to estimate the average loss in home value.
a) If std deviation of losses doubles as 3000 from 1500, we have margin of error also increases. Because margin of error
= ±Critical value * Std error
= ±Critical value * Std dev/sqrt n
Hence we find that whenever std deviation increases the margin of error increases, for the same level of confidence.
b) Whenever confidence level increases, critical value increases and as a result margin of error increases. Hence by reducing from 95% to 90% confidence interval would be reduced. True
c) Instead of changing conf level, increasing sample size would give more reliale and accurate results.
Answer:
b
Step-by-step explanation:
i could be wrong
Answer:
i think its c
Step-by-step explanation:
Answer:
Step-by-step explanation:
Denote this equivalence relation by 
(i.e, 
if and only if 
), is clear that 
is an equivalence relation since 
is. Now, by definition we have that ![[a]=\{b\sim a \mid f(a)=f(b) \}=f^{-1}(a)](https://tex.z-dn.net/?f=%5Ba%5D%3D%5C%7Bb%5Csim%20a%20%5Cmid%20f%28a%29%3Df%28b%29%20%5C%7D%3Df%5E%7B-1%7D%28a%29)
.
