The amount of money Deon earns working at a store is given in the table.
1 answer:
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Answer:
Their welders earn $50,000 annually.
Step-by-step explanation:
Given :
n = 100
To Find : The ship building association wishes to find out whether their welders earn more or less than $50,000 annually.
Solution :
n = 100
Since n > 30
So we will use z test
Substitute the values
Refer the z table for p value
p value = 0.9599
α= 0.05
Since p value > α
So we accept the null hypothesis .
Hence their welders earn $50,000 annually.
Answer:
Step-by-step explanation:
-3 is less than 0, so you are going to use .
Plug in values:
Answer:
Area of the shaded region = 3.46 square units
Step-by-step explanation:
Measure of the interior angle of a regular polygon =
From the picture attached,
Number of sides of the given polygon 'n' = 6
Interior angle (∠BAF) of the given polygon =
= 120°
Measure of ∠BAC =
= 30°
Now we apply sine rule in ΔAGB,
sin(30°) =
=
BG = AB[sin(30°)]
=
= 1
By applying cosine rule in ΔABG,
cos(30°) =
=
AG = AB[cos(30°)]
=
=
AC = 2(AG)
= 2√3
Area of ΔABC =
=
=
=
Area of the shaded region = Area of ΔABC + Area of ΔFED
= 2(Area of ΔABC)
= 2√3
= 3.46 square units
