Assume that a procedure yields a binomial distribution with n=815 trials and the probability of success for one trial is p = 0.32. Find the mean for this binomial distribution. (Round answer to one decimal place.) fl Find the standard deviation for this distribution. (Round answer to two decimal places.) σ = Use the range rule of thumb to find the minimum usual value μ-20 and the maximum usual value μ+20. Enter answer as an interval using square-brackets only with whole numbers. usual values=

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A: Given,Total no.of students=10mean score of 10 students=80and the mean score of 9 students=85

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A: n=11, SS=990

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Q: Find the  z -score for which  85%  of the distribution's area lies to its right.

A: We want to find out Z-score for which   85%  of the distribution's area lies to its right.

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