Hi there. I need assistance with the answer on these questions.

1.)

Sick children: There are 25 students in Mrs. Bush's sixthgrade class. On a cold winter day in February, many of the students had runny noses and sore throats. After examining each student, the school nurse constructed the following table. Round the answers to four decimal places, as needed. No Sore Sore 111mat Throat Runny Hose 7 10 No Runny 4 4 "use Sendda'latnEmoe-l (a) Find the probability that a randomly selected student has a runny nose. {b} nd the probability that a randome selected student has a sore throat. (c) Find the probability that a randomly selected student has a runny nose or a sore throat. {d} nd the probability that a randomly selected student has neither runny nose nor a sore throat. (a) Find the probability that a randomly selected student has a runny nose. The probability that a randomly selected student has a runny nose is D. {b} nd the probability that a randomly selected student has a sore throat. The probability that a randomly selected student has a sore throat is D . Part 3 of 4 (c) Find the probability that a randomly selected student has a runny nose or a sore throat. The probability that a randomly selected student has a runny nose or sore throat is Part 4 of 4 (d) Find the probability that a randomly selected student has neither runny nose nor a sore throat. The probability that a randomly selected student has neither runny nose nor a sore throat isDetermine whether the table represents a discrete probability distribution. Explain why or why not. x P {x} 56 0.3 66 0.8 76 0.2 86 0.3 {mg The table (Choose one} 1 represent a discrete probability distribution because (Choose one) all probabilities are between 0 and Ir and the probabilities add up to 1 all probabilities are between 0 and 1, but the probabilities do not add up to 1 probabilities add up to 1, but all probabilities are not between 0 and 1 all probabilities are not between 0 and 1 and the probabilities do not add up to 1 Compute the mean and standard deviation of the random variable with the given discrete probability distribution. x P(x) -6 0.17 -2 0.07 2 0.24 4 0.28 6 0.24 Send data to Excel Part 1 of 2 (a) Find the mean. Round the answer to three decimal places, if necessary. The mean is Part 2 of 2 (b) Find the standard deviation. Round the answer to three decimal places, if necessary. The standard deviation is