Question

Assume that the given procedure yields a binomial distribution with n trials and the probability of success for one trial is p. Use the given values of n and p to find the mean y and standard deviation o. Also, use the range rule of thumb to find the minimum usual value -20 and the maximum usual value u +20. In an analysis of preliminary test results from a gender-selection method, 33 babies are born and it is assumed that 50% of babies are girls, so n = 33 and p = 0.5. The value of the mean is = (Do not round.) The value of the standard deviation is o = (Round to one decimal place as needed.) The minimum usual value is u-20 = (Round to one decimal place as needed.) The maximum usual value is u + 20 = (Round to one decimal place as needed.)

Answer 1

solution: aj Mean = lio mp - 33x0.5 16.5 b) o= rnpq 33 80.5X0.5 2.9 II T2E8Alo 22. c) Minimum usual value usual value = 11-20 = 16.5 - 2 x 2.9 10.7 d) Maximum usual value = elt zo (27 - 16.5 + 2x 2.9 22.3 10