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.
Answer:
0, 1 ,1.3 ,2, 2.7
Step-by-step explanation:
First you would distribute the -12 to x and 5.
You would get -12x-60=144. Now solve for x.
Add 60 on both sides. (Do the inverse)
You get -12x=204
Then divide by -12 on both sides.
Answer: x=-17
5) 8/6=4/3=1 1/3
He collected 1 1/3
6) 60/10=6
They sold 6 cats per week
7) 90/10=9
He/she installed 9 sheets per minute.
What I learned was the formula of statistics is mean, median, mode, and absolute deviation.