Mathematics, 29.07.2019 22:20 amandaelisantos
In the following probability distribution, the random variable x represents the number of activities a parent of a 6 th dash to 8 th -grade student is involved in. complete parts (a) through (f) below.
x 0 1 2 3 4
p(x) 0.216 0.072 0.322 0.289 0.101
compute and interpret the mean of the random variable x.
the mean is activities.
(type an integer or a decimal.)
(d) compute the standard deviation of the random variable x.
the standard deviation is activities.
(round to one decimal place as needed.)
(e) what is the probability that a randomly selected student has a parent involved in three activities?
the probability is (type an integer or a decimal.)
(f) what is the probability that a randomly selected student has a parent involved in three or four activities?
the probability (type an integer or a decimal.)
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In the following probability distribution, the random variable x represents the number of activities...
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