Mathematics, 01.10.2019 21:30, jay5902
In a research sample of highschool students, the variable “number of fb friends” formed a normal distribution with a mean of 45 and a standard deviation of 16. valentina had 53 friends. what was her approximate percentile rank?
a) 31st
b) 53rd
c) 69th
d) 49th
Answers: 2
Mathematics, 22.06.2019 05:30, thisusernameistaken2
Carl is boarding a plane. he has 22 checked bags of equal weight and a backpack that weighs 4 \text{ kg}4 kg. the total weight of carl's baggage is 35 \text{ kg}35 kg.
Answers: 3
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