PLEASE HELP!!!!!!!!!!!!!!!!!!!!!!!!!! ANYONE PLEASE I'M DESPERATE A.F
1 answer:
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The basic angle for 1/2 is 60°, and cosines are negative in the first and third quadrant.
So, you take 180° - 60° = 120° to get the angle in the first quadrant, and 180° + 60° = 240° to get the angle in the third quadrant.
Since only 120° is an option, the answer is B.
Answer: C.
Step-by-step explanation:
The confidence interval for difference of two population mean is given by :-
Given : Level of significance :
Then , significance level :
Critical value :
Hence, a 99% confidence interval for the difference between the mean wait times of everyone who rode both rides