# Question: Find the mean and standard deviation of x for each

Find the mean and standard deviation of x for each of the following binomial random variables:

a. The number of tails seen in 50 tosses of a quarter

b. The number of left-handed students in a classroom of 40 students (Assume that 11% of the population is left-handed.)

c. The number of cars found to have unsafe tires among the 400 cars stopped at a roadblock for inspection (Assume that 6% of all cars have one or more unsafe tires.)

d. The number of melon seeds that germinate when a package of 50 seeds is planted (The package states that the probability of germination is 0.88.)

a. The number of tails seen in 50 tosses of a quarter

b. The number of left-handed students in a classroom of 40 students (Assume that 11% of the population is left-handed.)

c. The number of cars found to have unsafe tires among the 400 cars stopped at a roadblock for inspection (Assume that 6% of all cars have one or more unsafe tires.)

d. The number of melon seeds that germinate when a package of 50 seeds is planted (The package states that the probability of germination is 0.88.)

**View Solution:**## Answer to relevant Questions

Find the mean and standard deviation for each of the following binomial random variables in parts a–c: a. The number of sixes seen in 50 rolls of a die b. The number of defective televisions in a shipment of 125 (The ...Use a computer to find the probabilities for all possible x values for a binomial experiment where n _ 30 and p _ 0.35. The probability of success on a single trial of a binomial experiment is known to be .The random variable x, number of successes, has a mean value of 80. Find the number of trials involved in this experiment and the standard ...Verify whether or not each of the following is a probability function. State your conclusion and explain. Technology is the key to our future. Apparently, students believe this also. According to an April 2009 poll of high school students by Ridgid, the top career choice for high school students was information technology, ...Post your question