Answer:
The value of the test statistic is of 0.22.
Step-by-step explanation:
Our test statistic is:
In which X is the sample mean, 
is the expected mean, 
is the standard deviation(square root of the variance) and n is the size of the sample.
A lumber company is making boards that are 2920.0 millimeters tall.
This means that 
.
A sample of 12 is made, and it is found that they have a mean of 2922.7 millimeters with a variance of 121.00.
This means that 
. So
The value of the test statistic is of 0.22.
<em>Answer:</em>
<em>Hello There. The answer is 268</em>
Explanation
He spend £140 for 60 jumper
He sells 40%of jumper at £8 for each.
40%of 60
= 40/100 × 60
= 24 jumper
=sells at £8
= 24 ×8 =£192
After ,he sell buy 1 get one half price offer.
Ryan have 60% jumper of 60
= 36/2×8 +36/2×4
=144 + 72
= £216
Total earning= £192 + £216
=£408
So, profit = 408 - 140 = £268
Hope It Helps!
<h3>ItsNobody</h3>
Answer:
x=124.75
Step-by-step explanation:
Sum of angles of a triangle=180°
(x-40)+(x-20)+(1/2- 10)=180°
(x-40)+(x-20)+(−9.5)=180°
x-40+x-20−9.5=180°
x+x-40-20-9.5=180°
2x−69.5=180°
2x=180°+69.5
2x=249.5
2x/2=249.5/2
x=124.75
