Answer:
There is significant evidence to conclude that the replacement time for streetlights under the new contractor is longer than the replacement time under the previous contractor.
Step-by-step explanation:
Given the data :
6.2 7.1 5.4 5.5 7.5 2.6 4.3 2.9 3.7 0.7 5.6 1.7
The hypothesis:
H0: μ = 3.2
H1 : μ > 3.2
n = sample size = 12
The sample mean, xbar = ΣX / n
xbar = 53.2 / 12
xbar = 4.43
Using calculator;
Sample standard deviation, s = 2.147
The test statistic :
(xbar - μ) ÷ (s/sqrt(n))
(4.43 - 3.2) ÷ (2.147/sqrt(12)
1.23 / 0.6197855
Test statistic = 1.985
The Pvalue using the Pvalue from Tscore calculator :
Tscore = 1.985 ; df = 12 - 1 = 11
Pvalue = 0.036
Since Pvalue < α ; We reject the Null
Hence, we conclude that the replacement time for streetlights under the new contractor is longer than the replacement time under the previous contractor.
Answer:
it is and no solvable statement or no solution problem
Step-by-step explanation:
Answer:
>20 degrees
Step-by-step explanation:
Answer:
The complete table will be:
x y
1 5
0.8 4
0.4 2
Step-by-step explanation:
Given rule is:
y = 5x
In the given rule, x is multiplied by 5 to get the values of y. The same rule can be manipulated to find the value of x in terms of y.
Putting y = 5
Putting y = 4
Putting y = 2
Hence,
The complete table will be:
x y
1 5
0.8 4
0.4 2
<h2>
Answer:</h2><h3>The Answer is in the explanation</h3><h2>
Step-by-step explanation:</h2>
<h3><em>length of the rectangle</em> = 15 cm</h3><h3><em>Breadth of the rectangle = 13 cm</em></h3><h3 /><h3><em>Area of the rectangle = length × breadth</em></h3><h3><em>Area of the rectangle = length × breadth = 15cm × 13cm =</em></h3>
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<h3 /><h3 /><h3 /><h3><em>A</em><em>r</em><em>e</em><em>a</em><em> </em><em>of</em><em> </em><em>e</em><em>a</em><em>ch</em><em> </em><em>splited</em><em> </em><em>rectangles</em><em> </em><em>=</em></h3>
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</em>
<h3><em>=</em></h3>
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<h2>
<em>!</em><em>!</em><em> </em><em> </em><em>PLEASE</em><em> </em><em>MARK</em><em> </em><em>ME</em><em> </em><em>THE</em><em> </em><em>BRAINLIEST</em><em>!</em><em>!</em></h2>
<h3><em>AND</em><em> </em><em>I'M</em><em> </em><em>REALLY</em><em> </em><em>VERY</em><em> </em><em>SORRY</em><em> </em><em>IF</em><em> </em><em>MY</em><em> </em><em>ANSWER</em><em> </em><em>IS</em><em> </em><em>WRONG</em></h3>
