Answer:
H0 : μ = 8.5
H1 : μ > 8.5
1 sample t test ;
Test statistic = 2.53
Pvalue = 0.994
No, we fail to reject the Null ;
There is no significant evidence to support the Claim that the mean running time of light bulb is greater Tha last year.
Step-by-step explanation:
H0 : μ = 8.5
H1 : μ > 8.5
Test statistic :
(xbar - μ) ÷ (s/sqrt(n))
(8.7 - 8.5) ÷ (0.5 / sqrt40)
Test statistic = 2.53
The Pvalue :
P(Z < 2.53) = 0.9943
Pvalue = 0.994
Decison region :
Reject H0 ; if Pvalue < α
0.9943 > 0.05 ; We fail to reject the Null
The perimeter of the regular polygon is 70 inches
<h3>How to determine the perimeter of the regular polygon?</h3>
The sides of the regular polygon is given as:
Side = 10 in
The regular polygon has 7 sides
So, the perimeter of the polygon is calculated as:
P = Side lengths * Number of sides
This gives
P = 10 inches * 7
Evaluate
P = 70 inches
Hence, the perimeter of the regular polygon is 70 inches
Read more about perimeter at
brainly.com/question/24571594
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Answer:
X = 6 , – 2
Step-by-step explanation:
| 4x +4| - 10 =3x
4x +4 - 10 = 3x
4x - 3x = 10 - 4
x = 6
_____o___o____
– (4x + 4) – 10 = 3x
– 4x – 4 – 10 = 3x
3x + 4x = – 4 – 10
7x = – 14
x = – 14/ 7
x = – 2
I hope I helped you^_^
Answer:
The volume is 192.96
Step-by-step explanation:
You multiply length x width x height to find the volume.
