8. -13 POINTS MENDSTAT15 5.1.019. MY NOTES | ASK YOUR TEACHER Use the probability distribution for the random variable x to answer the question P(x) 0.12 0.25 0.25 0.26 0.12 Calculate the population mean, variance, and standard deviation (Round your standard deviation to the decimal places.) mean variance standard deviation - 1 POINTS MENDSTAT15 5.2.005. MY NOTES ASK YOUR TEACHER Consider a binomial random variable with n = 7 and 0.8. Let x be the numbe es in the sample. Evaluate the probability (Round your answer to three decimal places.) PEX3) You may need to use the appropriate appendix table or technology to answer this