<span>2a -5b=1
3a+5b=14
------------------add
5a = 15
a = 3
</span>2a -5b=1
2(3) -5b=1
<span>5b = 5
b = 1
answer order pair (3,1)
</span>
Let sample in Texas be p1, Louisiana be p2.
Null Hypothesis:
p1 - p2 = 0
Alternative Hypothesis: (This represents the claim)
p1- p2 < 0
To calculate test statistic, you need the pooled estimate which is a weighted average of the 2 sample proportions.

Next get standard error:

Calculate test statistic:

To find p-value, look up Z-value in standard normal table.
Anything smaller than -3 or larger than 3, you can estimate to have
p-value = 0.
If p-value < alpha, Reject Null Hypothesis.
For this example, 0 < 0.05, therefore reject null hypothesis.
There is evidence to support claim that proportion of smokers in Texas is LESS than Louisiana.
1. the fish, the plant, the starfish in the background
2. the water and the rocks
You have to do 7,800 divide by 12 and you get D) 650.
Answer:
3/6 chance.
Step-by-step explanation:
To roll an odd number on a six sided dice (Guessing it's six sided) you would have to roll either a 1, 3, or 5. That would it 3 choices. You get the six by taking the amount (like the amount of sides on the dice). You would then have a 3/6 chance of rolling an odd number.