Answer:
Degree of freedom is 6.
Step-by-step explanation:
A sample of seven infants is randomly selected and their weights at birth are recorded.
Given, Population mean = 6.6 pounds
Sample size = n = 7
Degree of freedom = n - 1
= 7 - 1
= 6
Degree of freedom is 6.
Answer:
-5
Step-by-step explanation:
Given the two box plots showing the number of seconds the students completes the 50-meter-dash race before and after the program, we are to determine the difference between the median value of seconds before and after the program.
Median in a box plot is represented by the vertical line that divides the rectangular box in a box plot.
Thus, the median before the program = 15 seconds
The Median after the program = 10 seconds
The median change = 10 - 15 = -5 seconds.
This means, after the program, most of the students now finish the 50-meter-dash faster, about 5 seconds less the former seconds used before the program.
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The answer is A. $14,523.60
Simplify <span>-28x-28+4−28x−28+4</span> to <span>-28x-24<span>−28x−2<span>4
</span></span></span> Add <span>28x28x</span> to both sides<span>39−7x+28x=−24Simplify <span>39-7x+28x39−7x+28x</span> to <span>39+21x<span>39+21<span>x
</span></span></span><span>39+21x=−24Subtract 39<span> from both sides
</span><span>21x=−24−39Simplify <span>-24-39−24−39</span> to <span>−6<span>3
</span></span><span>21x=−63Divide both sides by <span>21
</span>x=−

Simplify tex] \frac{63}{21} [/tex] to 3
<span>x=−3
</span>
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