thegreenroad45
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- Sep 9, 2020
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I am in Year 10 and we are doing probability.
There are two hospitals in a certain town: a small one and a large one. In the small hospital, an average of 15 babies are born each day; in the large hospital, an average of 45 are born each day. Assume that the likelihood of giving birth to a boy is 50%.
In the small hospital, a record has been kept of the days (call them “small blue days”) during the year 2013 on which more than 9 boys were born. In the large hospital, a record has been kept of the days (“large blue days”) in 2013 on which more than 27 boys were born. How does the number of small blue days compare to the number of large blue days?
Proposition A: The expected number of small blue days is equal to the expected number of large blue days.
Proposition B: The expected number of small blue days is not equal to the expected number of large blue days.
There are two hospitals in a certain town: a small one and a large one. In the small hospital, an average of 15 babies are born each day; in the large hospital, an average of 45 are born each day. Assume that the likelihood of giving birth to a boy is 50%.
In the small hospital, a record has been kept of the days (call them “small blue days”) during the year 2013 on which more than 9 boys were born. In the large hospital, a record has been kept of the days (“large blue days”) in 2013 on which more than 27 boys were born. How does the number of small blue days compare to the number of large blue days?
Proposition A: The expected number of small blue days is equal to the expected number of large blue days.
Proposition B: The expected number of small blue days is not equal to the expected number of large blue days.