in the following probability distribution, the random variable represents the number of activities a parent of a K to 5th grade student is involved in Complete parts (a) through in below O PAX 0.351 0.347 0.053 0.078 + tors t t Verity that this to probably drain The decet probably derbion became a prachprakty (1) Oh the discrete probably become OB . OD 04 03 2 (c) Compute and terpret the mean of the randomarex The man act (Type an integer or a decimal. Do not found) Which of the folowing interpretation of the mean is conect OA The observed value of an experiment will be equal to the mean of the random variable in most experiments B. The curved us of an experiment will be less than the men of the randone in most experiments OC As the number of experiments per the mean of the stortions will approach the mean of the random variable OD As the number of experiments decreases the mean of the con il approach the mean of the room ble (Compute the standard deviation of the random variatie The (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. Do not round.) ( What is the probability that a randomly selected student has a parent involved in three or four activities? The probability is (Type an integer or a decimal. Do not round)