In an experiment on the behavior of young children, each subject is placed in an area with five toys. The variable of interest X is the number of toys that the child plays with. Past experiments with many subjects
have shown that the probability distribution of the number X of toys played with is as follows:
X (number of toys) 0 1 2 3 4 5
P (X) 0.03 0.16 0.30 0.23 0.17 0.11

a) How many toys might you expect a child to play with?
b) What is the standard deviation of the number of toys played with?
c) Describe how you might carry out a simulation to estimate the mean number of toys played with
(don't actually do the simulation, just set it up).

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answer

a,b, and d

explanation

a reflection angle is more than

but less than;

an angle that measures

is a reflex angle.(true)

an angle that measures less than

is acute.(true)

provided we are considering angles greater or equal to zero.

an acute angle lies in the range.

an obtuse angle is less than 180° but more than 90°

an angle that measures 300° is obtuse (false)

an angle that measures 65° is an acute angle.(true)

according to the triangle sum theorem, all the angles in a triangle must add up to 180 degrees. if we know one angle is already 90, we do 180-90=90. the other 2 angles must add up to 90, exactly.

step-by-step explanation: