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 mu and standard deviation sigma. ​Also, use the range rule of thumb to find the minimum usual value mu minus 2 sigma and the maximum usual value mu plus 2 sigma. In an analysis of preliminary test results from a​ gender-selection method, 25 babies are born and it is assumed that​ 50% of babies are​ girls, so nequals25 and pequals0.5.

The value of the mean is muequals 12.5. ​(Do not​ round.)

The value of the standard deviation is sigma equals?. ​(Round to one decimal place as​ needed.)

Answer 1

The population mean is computed as:

and the population standard deviation is computed as:

Minimum usual value

Maximum usual value

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