State whether you think the difference between what occurred and what you would expect by chance is statistically significant.You draw a card at random from a deck of cards and replace it. You repeat this 60 times and get a heart 13 times.
A. Not statistically significant
B. Statistically significant
Answer: A
Mathematics
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Evaluate the expression.-(-3)2
A. 9 B. -9 C. 6 D. -6
Mathematics
Use the Gauss-Jordan method to find A-1, if it exists.A = 
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.If a rock falls from a height of 70 meters on Earth, the height H (in meters) after x seconds is approximately 
What is the height of the rock when x = 1.6 seconds? Round to the nearest hundredth, if necessary.
A. 57.71 m B. 57.46 m C. 82.54 m D. 62.16 m
Mathematics
Find the midpoint of the segment connecting the given endpoints.(1, 2), (4, 6)
A. 5, 8)
B. 
C. 
D. (-3, -4)
Mathematics