I guess the function is a parabola with vertex at (0,0) and opens down so the range is (-infinity, 0].
Answer: a. 14/30= 7/15
b. 16/30=8/15
C. 7/15= 47%
D.8/15= 53%
Step-by-step explanation:
Answer: A. 1.2
Step-by-step explanation:
Given : Sample size : n= 64
Standard deviation: 
The formula to find the standard error of mean is given by :-

Therefore, the standard error of the mean= 1.2
Hence, A is the right option.
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I Domitila get hungry :
Step-by-step explanation: