Answer:
A) P(Z > 5000) = 0.0322
B) P( Y = 2 or 3) ≅ 0.9032
Step-by-step explanation:
From the given information;
Suppose the sales for the first week are denoted by X and the sales for the second week are denoted by Y.
Then;
X & Y are independent and they follow a normal distribution.
i.e.
If we set Z to be equal to X+Y
Then, since two normal distribution appears normal
So;
From the Z - tables;
P(Z > 5000) = 1 - 0.9678
P(Z > 5000) = 0.0322
B)
Let Y be the random variable that obeys the Binomial distribution.
Y represents the numbers of weeks in the next 3 weeks where the gross weekly sales exceed $2000
Thus;
where;
p = 1 - P( Z < - 0.869565)
From the Z - tables;
p = 1 - 0.1924
p = 0.8076
Now;
P(Y ≥ 2) = P(Y = 2) + P( Y =3 )
Using the formula
P( Y = 2 or 3) = 0.9031911541
P( Y = 2 or 3) ≅ 0.9032
Answer:
0.0996
Step-by-step explanation:
6≥5
rounds up
5 goes up to 6
0.0996 has 4 d.p
Answer:
The killing curse
Step-by-step explanation:
Step-by-step explanation:
this is answer.is it write ???
Answer:
y = -17.25
Step-by-step explanation:
y/23 = -3/<em>4</em>
<em>by</em><em> </em><em>cross</em><em> </em><em>multiplication</em><em> </em><em>❌</em><em> </em><em> </em><em>;</em><em>;</em><em>;</em>
<em>4</em><em>×</em><em>Y</em><em> </em><em>=</em><em> </em><em>23</em><em>×</em><em> </em><em>(</em><em>-3</em><em>)</em>
<em>4y</em><em> </em><em>=</em><em> </em><em>(</em><em>-69</em><em>)</em>
<em>y</em><em> </em><em>=</em><em> </em><em>-69</em><em>/</em><em>4</em>
<h3><em>y</em><em> </em><em>=</em><em> </em><em>-17.25</em></h3>
<h3><em>I</em><em> </em><em>hope</em><em> </em><em>that</em><em> </em><em>this</em><em> </em><em>answer</em><em> </em><em>helps</em><em> </em><em>you</em></h3>