Answer:
I don't know what you mean, but I'll say 2a+1>9 is a>4
Step-by-step explanation:
You could do this with two weighings assuming its a two pan balance - (1) place three balls on each side - if they balance out then its the remaining three that has abnormal ball (2) out of that group, place one ball on each side - if balances it out, the abnormal ball is the remaining one.
If the weighing in step (1) does not balance out, grab the group of three balls that is light or heavy and repeat step (2) described above.
Answer:
Step-by-step explanation:
<em>Step 1: Define significance level</em>
In this hypothesis testing problem, significance levels α is selected: 
, the associated z-value from Laplace table:
Φ(
) = α - 
=> = 
<em>Step 2: Define null hypothesis (</em>
<em>) and alternative hypothesis (</em>
<em>)</em>
: rate of flu infection 
= 8.3% or 8.3/100 = 0.083
: rate of flu infection < 8.3% or 8.3/100 = 0.083
<em>Step 3: Apply the formula to check test statistic:</em>
with 
is actual sampling percent, is rate of flu infection of , 
is number of samples.
The null hypothesis will be rejected if 
<em>Step 4: Calculate the value of K and compare with </em>
We have 
=>This is good evidence to reject null hypothesis.
=> The actual rate is lower. (As states)
Hope this helps!
:)
Answer: -11
Step-by-step explanation:
Work with the first group of numbers " (9+8-6) " equals 11
Next move to the second pair "(4-5) " equals -1
Lastly multiply, 11 x -1 = -1
Answer:
0
Step-by-step explanation:
As per divisibility rule, a number is divisible by 2 when one's place has the number 0,2,4,6 or 8
As per divisibility rule, a number is divisible by 5 when one's place has the number 0 or 5
As per divisibility rule, a number is divisible by 10 when one's place has the number 0
So, if a number is divisible by 2,5 and 10, then the number one's place should have 0
