Answer:
X² = 13.5
Degree of freedom = 6
0.04
Step-by-step explanation:
Give the following :
Number of samples (n) = 7
Population standard deviation (σ) =.4 minutes
Sample standard deviation (s) = 6
Mean battery life = 60 minutes
A) Chisquare (X²) :
X² = ((n - 1) * s²) / σ²
X² = ((7 - 1) * 6²) / 4²
X² = (6 * 6²) / 4²
X² = (6 * 36) / 16
X² = 216 / 16
X² = 13.5
B.) The degree of freedom:
degree of freedom = n - 1
Degree of freedom = 7 - 1 = 6
C.) using a chisquare distribution calculator :
With degree of freedom (df) = 6
X² = 13.5
Hence,
P(X² > 13.5) = 0.04 ( from calculator)
Answer:
a ratio that compares a selected number of parts. to the total number of parts in a whole.
Step-by-step explanation:
You can’t factor it your answer is 1.2
Answer:
positive correlation for y and c
Answer:
- 6 units left and 4 up (if figure K translated)
- 6 units right and 4 units down (if figure J translated)
Step-by-step explanation:
<em>It is not clear which of the figures is translated.</em>
<em>Assume it is figure K.</em>
Use one of the points and compare the corresponding point.
<u>If you take bottom-left point, then the difference is coordinates is:</u>
- -7 - (-1) = -6, this is translation left by 6 units (or right if the figure J is translated)
- 2 - (-2) = 4, this is translation up by 4 units (or down if the figure J is translated)
<u>So the answer is </u>
- 6 units left and 4 up or, (figure K translated)
- 6 units right and 4 units down (figure J translated)