Answer:
This is an example of placebo testing.
Step-by-step explanation:
This is an example of placebo testing in which, the two groups are given two substances that are said to have an effect on the condition that is being treated but one of them is the actual medicine that is being tested while the other one has no real effect over the medical condition. But the volunteers are not given information on which of the medicines is real and which is not, so that this does not affect the outcome of the experiment.
I hope this answer helps.
Answer:
option B
Step-by-step explanation:
![P(x =x) [{\frac{1}{6} ;x =1,2,3...6]](https://tex.z-dn.net/?f=P%28x%20%3Dx%29%20%5B%7B%5Cfrac%7B1%7D%7B6%7D%20%3Bx%20%3D1%2C2%2C3...6%5D)

Given random experiment of tossing of 6 sided dice is follow above distribution
Therefore, suppose x₁, x₂ ...x₁₀ are 10 independent and indentical random variable which represent first 10 rolls
Average of first 10 rows equals


now suppose ,
x₁₁,x₁₂, ...x₁₅ are 5 independent and identical random variable which represent last 5 roll
average of last 5 roll is

Therefore,
3.5 - 3.5 = 0
Answer:
p = 250 - 15(w)
Step-by-step explanation:
Original amount: 250
No of weeks to return money: w
Amount to pay each week: 15
Amount that he has paid back: 15 × w (When we subtract this term from the total we will get the answer)
So after w weeks he owes his parents :
p = 250 - 15(w)
Answer:
Unclear
Step-by-step explanation: