The answer is 0.8
I think that’s the answer
I think about 200 people will vote for eric let me recheck
For your question, it would be the second one
Answer:
Kindly check explanation
Step-by-step explanation:
Given the question :
The z-score boundaries at an alpha level α = .05 are:
When critical region is split across both tails of the distribution.
Then our alpha level is also divided by two and the Zscore of the probability obtained is looked up on the z table.
α = .05
Since critical region is split into 2, alpha will be divided by two to obtain the probability value ;
α/2 = 0.05 / 2
α/2 = 0.025
Zα/2 = Z.025
From the z table, probability of 0.025 corresponds to a Zscore of - 1.96 ( negative tail)
Also, (1 - 0.025) = 0.975 corresponds to a Zscore of - 1.96 ( positive tail)
Z.025 = ±1.96
Answer:
Money with Mary = $28
Money with Vivan = $12
Step-by-step explanation
Money with Mary = $ m
Money with Vivan = $v
If mary gave vivan $8 they would have same amount. $ 8 is reduced from Mary's amount 'm' and $8 is added to vivan amount 'v'
m - 8 = v + 8
m = v + 8 +8
m -v = 16 ----------------(I)
If vivan gives mary $8, then mary would have 9 times as much as vivan.
9(v - 8) = m + 8
9v - 72 = m + 8
9v - m = 8 + 72
-m + 9v = 80 --------------(II)
Add equation (I) and (II). Thus m will be cancelled and we will get the value of v
(I) m - v = 16
(II) <u>-m + 9v = 80</u> {Now add}
8v = 96
v = 96/8
v = $ 12
Plugin v = 12 in equation (I)
m - 12 = 16
m = 16 +12
m =$ 28
