27 / - 0.09 = - 300 <====
Answer:
The z-score corresponding to an observed value of x of 2 is 0.215.
Step-by-step explanation:
We are given that a variable x has the possible observations shown below;
Possible observations of X: -3, -1, 0, 1, 1, 2, 4, 4, 5.
Firstly, we will find the mean and the standard deviation of X, i.e;
Mean of X, () =
=
= = 1.44
Standard deviation of X, () =
=
= 2.603
Now, the z-score corresponding to an observed value of x of 2 is given by;
z-score =
= = <u>0.215.</u>
Multiply x by four and add 1 to get y. 10 times 4 plus 1 is 41, 5 times 4 plus one is 21, 25 times 4 plus 1 is 101.
Possibly Melatonin if you have any, Music can help sometimes relax your mind, reading can help tire you out, and/or Television can also relax your mind and tire you out. Hopefully this helps!