Investigate the distribution of males´ and/ or females in families. You may choose, for example, to collect data on the distribution of girls in families of three children and to estimate the probability of a female birth.

Authors Avatar
Normal DistributionLiving with uncertaintyFor this coursework I have chosen to do assignment B2It states: Investigate the distribution of males´ and/ or females in families. You may choose, for example, to collect data on the distribution of girls in families of three children and to estimate the probability of a female birth.To be able to collect the necessary data for the investigation, I will have to look at families with 3 children. The datum will be collected from pupils in the school I go to. I will collect the data by sending questionnaires to every pupil in the school from year seven (aged 11-12) to year thirteen (aged 17-18) asking them how many children are in there families and how many are male/female. From here the data will be sorted through and only the relevant questionnaires (the ones with three children in their families) will be taken
Join now!
out.A sample size of thirty is thought to be sufficient in this data collection so to collect this number every successful questionnaire was given a number (136 in total). 136 was placed into a graphic calculator which then randomly gave out 30 numbers.It should be noted that the larger the sample size the more reliable the results are likely to be.Hypothesis: The probability of having a boy in a three-child family is above 75 %.The probability of giving birth to a boy is the same as a girl, this can be proved by using genetic code which is below.x yBoy ...

This is a preview of the whole essay