Answer:
f(x) = –x2
Step-by-step explanation:
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The interval of 95% confidence, for normally distributed variables, is average +/- 2 * standard deviation:
(-2*standard deviation + average , average + 2*standard deviation)
(-2*18 + 62.5 , 2*18 + 62.5) = (-36 + 62.5 , 36 + 62.5) = (26.5 , 98.5)
Answer: option D)
15/4 / 5/8
= 15/4 times 8/5 (you flip the 2nd fraction)
15/4 times 8/5 = 120/20
120/20 can be simplified to 6/1=6
The answer is 6
I need more info if i can do this sry
