We got a three 18 of 80 times,
rel freq = 18/80 = 22.5%
It is -p... think about it.... two negative signs equal a positive sign, if there are an odd number of negative sign's the real answer is -p, and if there is an even amount, it means it is positive p. In your situation, there are 5 negative signs, so since 5 is an odd number, the p has to be negative.
1.5 cups of vegetable oil
Arranging them in ascending order :
21 , 21 , 30 , 44, 49, 52
Median = (30 + 44) ÷ 2
Median = 37 mins
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Answer: Median = 37 mins (Answer D)
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Number 8? I don't know which one you are talking about.