Find the mean and standard deviation for each binomial random variable: a. n = 56, T = .95 (Round your mean value to 2 decimal places and standard deviation to 4 decimal places.) Mean 53.20 Standard deviation

Find the​ mean, variance, and standard deviation of the binomial distribution with the given values of n and p.   n=123​, p equals 0.48

Calculate the expected value, the variance, and the standard deviation of the given random variable X. (Round all answers to two decimal places.) X is the number of red marbles that Suzan has in her hand after she selects four marbles from a bag containing four red marbles and two green ones. expected value variance standard deviation Need Help? Read It

61% percent of adults in a certain country believe that life on other planets is plausible. You randomly select 5 adults and ask them whether they believe that life on other planets is plausible. The random variable represents the number of adults who believe that life on other planets is plausible.  Find the​ mean, variance, and standard deviation of the binomial distribution for the random variable, then interpret the results. The mean= 3.85The variance= 0.89 ​The standard deviation= 0.94  On​ average, _________ out of every 5 adults in the country believe that life on other planets is plausible. In most samples of 5​ adults, the number of adults who think life on other planets is plausible would differ from the mean by no more than _________.