Answer:
a. There is sufficient evidence at the 0.05 level of significance that the medicine relieves pain in more than 325 seconds.
Step-by-step explanation:
With the info provided let the parameter of interest
who represent the mean that the medicine relieves pain, the system of hypothesis would be:
Null Hyp: 
Alternative Hyp : 
If we know the population deviation, is better apply a z test to compare the actual mean to the reference value, and the statistic is given by:
z-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".
If the deviation is not known we can use the t test with the following statistic:
On this case the decision was REJECT the null hypothesis. That means that we obtain a significant result with a p value lower than the signficance level

So then we can conclude this:
a. There is sufficient evidence at the 0.05 level of significance that the medicine relieves pain in more than 325 seconds.
The answer is just y=1.50+2x
I believe it's
- 1 -

Hope I helped! ( Smiles )
M<4 and m<8 are corresponding angles. They have the same measure.
m<4= 30 degrees, so m<8 is equal to 30 degrees as well.
Remember: This only works if the lines cut by the transversal are parallel.
I hope this helps!
~kaikers
Answer:
$1.12
Step-by-step explanation:
One way to solve this problem is through an algebraic equation. Set up the equation like this,
. This equation works because 3.28 is subtracted from 10, which represents how much was spent in total. Then, this is equal to 6x, which represents the total cost of six keys.
So, to solve first subtract 3.28 from 10, this gives you 6.72. Then, divide both sides by 6. This equals 1.12, which is the cost of each key.