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The scores of students taking the ACT college entrance examination are normally distributed with a mean µ = 20.1 and a standard deviation σ = 5.8.
a) A single student is selected at random. Determine the probability that their ACT score was between 18 and 24.
b) Determine the probability that a simple random sample of 25 students would earn an average score of at least 22.
Ashow that sec^2x+cosec^2x cannot be less than 4
Sketch the graph of y = ( x -1) 2 - 4 . Solution Now, it is a parabola .Though, we haven't gotten that far yet and thus we will have to select
1 1/3:2/3:1/6
Q) In a lottery ,a person chooses six different natural numbers at random 1to 20,and if there six numbers match with the six numbers already fixed by the lottery committee ,he win
Leslie ordered a slice of pizza for $1.95, a salad for $2.25, and a soda for $1.05. What was the total cost of her order? The cost of every item must be added together; $1.95 +
find the amplitude and period of y=3 sin 2 pi x
(1 0 3 21 -1 1 -1 1) find A-1
#a grocer buys a box of 200oranges for $25 he sells them for 15c caluclate his percentage profit
one half y minus 14
two rolls of carpet cost £574, the first cost £8 per meter, the second which is 7m longer costs £7 p/m. how many meters are there in each roll
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